Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee7153a76f2a7461…

MALICIOUS

PDF

91.7 KB Created: 2021-09-15 16:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: dabb3ffa73a9c66af29b256d1804408c SHA-1: 2bb0c2163425f844a56ffdc617e29dcff31f544d SHA-256: ee7153a76f2a7461498a151d9b5e28fbecda61eb276e1cb8383aef183cee04b4
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF that contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. Heuristics indicate a high probability of maliciousness, with ClamAV detecting it as a 'Pdf.Phishing.Trojan'. The presence of a visual download button further supports the intent to trick the user into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crysiq.ru/uplcv?utm_term=star+wars+rivals+mod+apk PDF link annotation
    • https://webdatedepot.com/userfiles/file/90884505118.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613f5161b0542---59370266171.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/files/59186067591.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/2c8bbeb951eae169cbb72a851e97fd5d/lepejaxapelunebalozumif.pdfIn PDF document text
    • http://prplus4u.com/ckupload/files/30878620529.pdfIn PDF document text
    • http://daivupaint.com/img-chamthi/files/15120275162.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f34f1c0a3a---nuwibovekutonejeburiv.pdfIn PDF document text
    • http://debeleven.net/UserFiles/File/53092731196.pdfIn PDF document text
    • https://at2-turbo-j3t.com/contents/files/87714990402.pdfIn PDF document text
    • http://manu-transport.com/documents/file/navabirenidiguki.pdfIn PDF document text
    • https://nergizleryapi.com/image/files/88785461918.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/ejbkguuu2eekqthrap537l9n26/lebabu.pdfIn PDF document text
    • https://fuze-pay.com/ckfinder/userfiles/files/rewor.pdfIn PDF document text
    • http://corkpotters.com/images/zelabawirexumolowazeke.pdfIn PDF document text
    • http://photo-preiss.com/upload_files/files/79164895254.pdfIn PDF document text
    • http://komodovo.ru/upload_picture/tifobubafewinu.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/ju9l68j3a3db8gnbokuu6r1lgb/16499063494.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133d477325fb---37240092278.pdfIn PDF document text
    • https://abcoegypt.com/userfiles/files/muzuxipe.pdfIn PDF document text
    • http://cityclick.it/userfiles/files/60295882626.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/25081583912.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133ad83e64ca---7269327437.pdfIn PDF document text
    • https://aporpeter.ro/userfiles/file/35371689915.pdfIn PDF document text
    • http://kronikarp.pl/ckfinder/userfiles/files/pakiginubimisugatovowe.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d67a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67A 23068 bytes
SHA-256: c189ab5d26d0b3e4fe96f7d82bdaabdd600ed3fbe19ea1d3c28064ba1324549e
font_01_sfnt_off000111ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111AC 16132 bytes
SHA-256: 071bac7a3a90310621307d68123817e30fba7c89f9e5021c4391eb43bd8b9137
font_02_sfnt_off00012723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12723 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00013f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F30 1820 bytes
SHA-256: ef4c56b83544acc0eae329b123dcb13384a4443b8ee25b6b011fcec9f25c534c
font_04_sfnt_off000147bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147BB 10636 bytes
SHA-256: d68df154a730d986fbfbe5f3cf54abf26d29de5c274f5e10acd9e30f9e824656

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