Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7c4511fad888e02…

MALICIOUS

PDF

75.7 KB Created: 2021-01-12 13:51:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: db80a8f046f64c2fc7d0fa9abf3b0aaa SHA-1: 21800f7d9680e7485238a39a0a5562657442bddd SHA-256: d7c4511fad888e02c319884f1bc1f8009d1e4703e238f90c840066c3979a5fbe
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by a ML classifier and ClamAV. It contains numerous external links, many hosted on disposable domains, and employs urgency lures. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to download a password-protected archive, a common tactic to bypass gateway security. The embedded URL 'https://traffset.ru/aws?utm_term=bon+jovi+crush+album++zip' is a primary indicator of a potential download lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffset.ru/aws?utm_term=bon+jovi+crush+album++zip PDF link annotation
    • https://site-1174602.mozfiles.com/files/1174602/In PDF document text
    • https://site-1177077.mozfiles.com/files/1177077/barack_obama_dreams_from_my_father.pdfIn PDF document text
    • https://site-1242588.mozfiles.com/files/1242588/pipatekenekapukarejesu.pdfIn PDF document text
    • https://site-1178814.mozfiles.com/files/1178814/39125897042.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/5291399.pdfIn PDF document text
    • https://site-1216840.mozfiles.com/files/1216840/angular_5_theme_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407733/normal_5f964f4a4c4ed.pdfIn PDF document text
    • https://site-1178171.mozfiles.com/files/1178171/devil_ninja_fight_apk_download.pdfIn PDF document text
    • https://site-1246361.mozfiles.com/files/1246361/wibijufo.pdfIn PDF document text
    • https://nimudizovif.weebly.com/uploads/1/3/4/4/134478886/31010ff.pdfIn PDF document text
    • https://site-1168046.mozfiles.com/files/1168046/unmodified_audit_report_example_philippines.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/zimivel.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/rakesoledoputavusog.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A7 5548 bytes
SHA-256: a4df3903a907ab6ce875da8129563869834d4a1aa70095691a6c5a712399400e
font_01_sfnt_off0000f96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96D 13652 bytes
SHA-256: 94b1f1847a722c81ad61963539fde8a5c084bb458338fc10431bfa35120a623c

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