Malicious PDF — malware analysis report

Static analysis result for SHA-256 e640eed8f3975fe8…

MALICIOUS

PDF

83.4 KB Created: 2021-09-10 12:55:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 0bd316cba43257b64c57a961fbba65f4 SHA-1: 4d09a98a1e2332daa9a2e51ca51ce42c8e77be89 SHA-256: e640eed8f3975fe850f40234082c142c6ff775760aada469803f8e03a0b3adde
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://2rent.gr/userfiles/file/pozutidipipapimupomumigev.pdf In PDF document text
    • http://baohanhranghm.com/upload/img/files/befodupokurel.pdfIn PDF document text
    • http://ssteelelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/runukave.pdfIn PDF document text
    • http://e-photo.lv/ckfinder/userfiles/files/gexadon.pdfIn PDF document text
    • http://asbazainville.org/userfiles/file/29891611509.pdfIn PDF document text
    • http://sarljarry.fr/userfiles/file/xajerodixu.pdfIn PDF document text
    • http://reylab.com/userfiles/file/renuk.pdfIn PDF document text
    • http://congluc.com/upload/files/36434351772.pdfIn PDF document text
    • https://coffotea.com/uploads/files/202109081417266303.pdfIn PDF document text
    • http://angelascanu.it/uploads/file/tifelisubufavo.pdfIn PDF document text
    • https://volgogradexpo.ru/ckfinder/userfiles/files/72094359915.pdfIn PDF document text
    • http://instit.ac/ckfinder/userfiles/files/bakofozagoj.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/viwosodekemexitisib.pdfIn PDF document text
    • http://imaginove.eu/data/Files/92039875907.pdfIn PDF document text
    • https://fleschimmo.lu/userfiles/files/50937441797.pdfIn PDF document text
    • http://musicpark-live.com/userfiles/file/siwugogo.pdfIn PDF document text
    • http://tuyothuyluc.vn/webroot/img/files/vafolidumogefumukabab.pdfIn PDF document text
    • http://herve-coiffure.ci/files/29980877745.pdfIn PDF document text
    • http://feynburg-uhren.de/uploads/88967905018.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/221f11b9dbdc1340a59ef794f247b0e7/76658348277.pdfIn PDF document text
    • https://jechrina.gr/FCKeditor/userimages/file/nofotedoderozapexa.pdfIn PDF document text
    • http://twtime.com/uploads/files/202109031127413259.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=rec+room+android+beta+downloadPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE035 18480 bytes
SHA-256: 3d5077df135e39289d178bce9e909291a92753a60e82dc654fea83af9683c3ab
font_01_sfnt_off00011021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11021 10636 bytes
SHA-256: 20882bd681c3aa434f219e4dc749f53754c87132d944d00fe97b448928f59b7d
font_02_sfnt_off0001287c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1287C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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