Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a8ab2817ab67a26…

MALICIOUS

PDF

83.2 KB Created: 2021-09-19 06:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 948aefe000d71b23b72960d50c785e77 SHA-1: ae0175a823c8ccd42ab048e69e9493db2d34471d SHA-256: 3a8ab2817ab67a26490929002c4fccc08f67a3bb12a949198188eb2a1e0052e0
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 contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • 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 http://regalmotors-jp.com/js/upload/files/8027527656.pdf In PDF document text
    • http://benthanhsgfarm.net/images/uploads/files/57806759113.pdfIn PDF document text
    • http://qdsenfeng.com/data/files/padiwalefiwofi.pdfIn PDF document text
    • https://tideandtigers.com/ckfinder/userfiles/files/funuxadoxex.pdfIn PDF document text
    • https://fontaine-eva.fr/userfiles/files/kunuvazofod.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/dalemilowoxoreteki.pdfIn PDF document text
    • http://mwcapital.net/ckfinder/userfiles/files/59066942462.pdfIn PDF document text
    • http://www.beautyvogue.ch/Files/file/50490789732.pdfIn PDF document text
    • https://helicopterleasingservices.com/userfiles/files/36475094573.pdfIn PDF document text
    • https://falconshipping-uae.com/userfiles/files/xevap.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a22080fd39---49381448262.pdfIn PDF document text
    • https://stonebuild.bg/f/uploads/files/duxifob.pdfIn PDF document text
    • http://heimundsicherheit.de/userfiles/file/46296953701.pdfIn PDF document text
    • https://saatyapi.com/upload/ckfinder/files/32956268983.pdfIn PDF document text
    • http://scantech3d.com/files/75232653181.pdfIn PDF document text
    • https://tlkingatlan.hu/kepek/other/file/20294992057.pdfIn PDF document text
    • https://reha.bg/content/upload/file/87683050847.pdfIn PDF document text
    • http://partner-support.net/user_data/userfiles/files/loripufugikimabasupori.pdfIn PDF document text
    • http://cerritos.songhakbbq.com/uploads/files/15665344721.pdfIn PDF document text
    • http://officegate.biz/admin/fck_upload/file/90220468927.pdfIn PDF document text
    • http://stroyindustry.com/userfiles/file/86575193163.pdfIn PDF document text
    • http://clinicaveterinariailmarzocco.it/userfiles/files/77521577873.pdfIn PDF document text
    • http://pretaporter-pegah.com/userfiles/file/zepesugegoridoranasos.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=fate+stay+night+unlimited+blade+works+movie+onlinePDF 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_off0000dec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC9 11272 bytes
SHA-256: 70f61e9cc5b725a451ec5b55b21a1d9bea6409986d072a520de06635e359e24c
font_01_sfnt_off0000f8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E6 17776 bytes
SHA-256: 08400b6b1ba44a6a3d6f4aaf77c1b26d417015fbc0a94c02bbcd16e183de0224
font_02_sfnt_off00012735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12735 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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