Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa6e6d15a2688cb…

MALICIOUS

PDF

75.7 KB Created: 2021-08-14 16:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c5542f456083921ca323b0c384793eaf SHA-1: 5653219c988c7b49d389a4528ef1c936185370e9 SHA-256: 0fa6e6d15a2688cba7b103eefc39d0dbcaafcd903ec5ab0c73fcc36e3341b8dd
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple compromised websites and disposable hosting domains. The embedded URLs suggest an attempt to distribute phishing content or further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://archism.ru/uplcv?utm_term=jackie+chan+adventures+season+1 PDF link annotation
    • http://ballarioarchitetti.eu/userfiles/files/dexefodifinitosug.pdfIn PDF document text
    • http://personnelstrategies.net/userfiles/file/sadesoxisopete.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/063a0ab881ee58cbdbcd8080e552be1d/jozizupaxomaruga.pdfIn PDF document text
    • https://przygodanaukrainie.pl/admin/ckfinder/userfiles/files/lebafelakotonarijopelon.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607272383e0fe---nifutonivom.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/lupeto.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb202d6beec---7404645591.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ef29128c6---koreve.pdfIn PDF document text
    • http://namngonviet.com/user-/files/98693566878.pdfIn PDF document text
    • http://cmtoolsrental.com/user_img/files/32947887777.pdfIn PDF document text
    • http://soncongnghiepjotun.com/media/ftp/file/lozexexaziponawevuv.pdfIn PDF document text
    • http://ttmplus.com/userfiles/files/36479697972.pdfIn PDF document text
    • http://skupka23.ru/upload/m/62440940706.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160758d4c66de0---50110099135.pdfIn PDF document text
    • http://weymouthhighschoolclassof62.com/clients/5/50/50fe23896e84432c97ff20d680692bb9/File/delimis.pdfIn PDF document text
    • http://poledance-chrudim.cz/files/file/20614096558.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/6gna3tfk1tfkff7bnp6e4f2p2k/pejelubuxemoku.pdfIn PDF document text
    • http://capitaldanceacademy.com/userfiles/files/79080412717.pdfIn PDF document text
    • http://longarmquiltacademy.com/fckeditor/userfiles/file/40232489154.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/se6867khap32bfqcfdnv85siqs/52321315275.pdfIn PDF document text
    • http://getem.eu/files/file/bulunipomaxaraxomipekaj.pdfIn PDF document text
    • http://wenxuezj.com/images/File/wajoromimisejitomugosij.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/b6c9cb7822d6670feba5d412552f644d/vudimagesatukuw.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c88adb92013---tijodona.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_off0000c40a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC40A 16108 bytes
SHA-256: d15f55bf0bfed9dd2806c8a176ac51888e162f20c04f991bb9057d95b0cfc74c
font_01_sfnt_off0000ed76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001058d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058D 10724 bytes
SHA-256: 72f181531f5feebb37f2c093b150ca4bc4bcaaa821868b616abe51c3ef9b803b

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