Malicious PDF — malware analysis report

Static analysis result for SHA-256 08021f80ccca8edc…

MALICIOUS

PDF

84.0 KB Created: 2021-08-05 02:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 02a7d148beaa99ea85bfa44c8fa65812 SHA-1: a9db2827758d39ba70b5551ab8f71239e206dd5b SHA-256: 08021f80ccca8edc6022046e41e334ee2005e02833ee5c8f64c5772583c928dd
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple URLs pointing to compromised WordPress sites, indicating an attempt to host and distribute malicious files. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic of providing password instructions to bypass gateway scanning. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9902

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/j82k6dab94b3gb6peno3t0o1cr/febodiwodafurumugivoz.pdf In PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608656bb57583---suxubasaguzadek.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffde40ca42---27316352257.pdfIn PDF document text
    • https://caribemed.com/userfiles/file/pasipulalamozezo.pdfIn PDF document text
    • http://nhs1968.com/clients/65482/File/vewubewirejaxotukapijema.pdfIn PDF document text
    • http://kingsfinancialconsulting.com/userfiles/file/19618134603.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/16085c9e79ddcb---gedejutududunowixixawawi.pdfIn PDF document text
    • http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pomuzesilixuxak.pdfIn PDF document text
    • http://coimbra.hu/uploads/ckfinder/userfiles/files/95050753329.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/ee4a94f016ed5f7063316dbe908f16c4/88480932510.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/rh0tqij8186l3jhgqpib6ijli2/dulanokuroruwizudiwexo.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4bc0ed0ca---1822582995.pdfIn PDF document text
    • https://mfdesign.hu/files/file/91415682918.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f33c5d8b7e5---26397648370.pdfIn PDF document text
    • https://em.heephong.org/ethnicminorities/cmsadmin/ckfinder/files/39919086088.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/224dda1808d4d69c2c64327946c78431/61086423657.pdfIn PDF document text
    • http://delve-cr.com/uploads/renazebi.pdfIn PDF document text
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/5931864005.pdfIn PDF document text
    • http://nissanotogovap.net/uploads/images/files/32845226282.pdfIn PDF document text
    • http://4seasonstours.in/userfiles/file/kepexabuzimapipetumabi.pdfIn PDF document text
    • https://soosekszer.hu/upload/files/pejetojarikejabudemok.pdfIn PDF document text
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/0d6bb20040511d44dbff1c66742305a2/wivebusugixotovesokaxax.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7f27d6bd2---kajilixeripalobizarotosiz.pdfIn PDF document text
    • https://rinducm1.com/contents//files/papiw.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8f0b35ce07---60957464100.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/3fbef30fc99fb6c6a3a5c58a8aa85018/51282690402.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+solve+rubik%27s+cube+fastest+way+in+hindiPDF link annotation
    • https://mediacentre.aerlingus.com/js/ckfinder/userfiles/files/19371691996.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e52f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD46 11196 bytes
SHA-256: ced40cee18496592da3b9e5702880934431778ecd86b8f13e644b99c40fbc8ac
font_02_sfnt_off00011783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11783 15896 bytes
SHA-256: c1684714f1c60576d370c277e88c95506b15b4797e141c4d7675af7b0f7f3e28

Open this report in the interactive analyzer, or submit your own file for analysis.