Malicious PDF — malware analysis report

Static analysis result for SHA-256 32588ae6fa434e22…

MALICIOUS

PDF

79.6 KB Created: 2021-09-19 01:30:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: bc7477bf98e9bf30503ff9f55381c9c1 SHA-1: 2926d19d19afadef19e2fdd3c8c5d36874fc1143 SHA-256: 32588ae6fa434e226a6e701acf9f6a199540d5778090d71a759b510ab0006e83
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

This PDF document was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The 'SE_MFA_LURE' heuristic indicates the document is designed to trick users into providing one-time codes or MFA approvals, consistent with credential harvesting. The document also contains numerous links to potentially compromised websites and disposable hosting, suggesting it is part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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 http://eastcoastbiker.de/sites/default/files/file/mimun.pdf In PDF document text
    • http://ck-kutnahora.cz/gais/image/file/tedaluwemixivuzamarof.pdfIn PDF document text
    • https://astoraccessories.com/uploads/ckfinder/files/22095495178.pdfIn PDF document text
    • http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/879981861.pdfIn PDF document text
    • http://hunting.kg/userfiles/file/60666553732.pdfIn PDF document text
    • https://phatgiaolongan.com/upload/ckupload/files/tipenipebejagivukanewamef.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145060452773---17855055341.pdfIn PDF document text
    • http://morethancars.nl/uploads/edytor/file/9075095938.pdfIn PDF document text
    • http://whitedwarf.ru/public/images/ckfinder/files/27009657795.pdfIn PDF document text
    • https://cubic.is/userfiles/file/jajaxagakemukisala.pdfIn PDF document text
    • http://kbidc.kr/upload/editor/file/1630957758.pdfIn PDF document text
    • http://awarelaxcentrum.cz/user_files/file/jasukabezasijomisof.pdfIn PDF document text
    • https://ceiling.holcom.vn/webroot/img/files/70366475100.pdfIn PDF document text
    • http://dotykbylinky.sk/_subory/subory/7419384589.pdfIn PDF document text
    • https://yomadesign.com/userfiles/Proj_Name/files/kovagolumakonutiki.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/23d216c3ffa11eda563e9518f8c9a872/96483027470.pdfIn PDF document text
    • http://hoadondientu-ptp.vn/images/ckeditor/files/2994574392.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135bcf34aea0---12920625310.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a8ffc88078---21945225547.pdfIn PDF document text
    • http://tk-weld.com/images/library/File/3045362130.pdfIn PDF document text
    • http://eot.mn/uploads/userfiles/files/sumevifuforunebajofirezo.pdfIn PDF document text
    • https://karapinler.com/calisma2/files/uploads/xuzox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+delete+fortnite+account+on+xboxPDF link annotation
    • 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_off0000d495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD495 16780 bytes
SHA-256: 37ef7deb6e023827df96561a8cf979c0756b48483a75e36833518104c92c2037
font_01_sfnt_off0000ffd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000117e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E8 10720 bytes
SHA-256: aa129172aae5a6c65394b1f6478a773ee4fcfa7681f1c259a5ae87725d0ebd24

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