Malicious PDF — malware analysis report

Static analysis result for SHA-256 460069ea68b43741…

MALICIOUS

PDF

69.6 KB Created: 2021-01-24 15:11:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c0496a7b92ccb8db5294a1103f195f56 SHA-1: 728041d863bcb34e09c2267337cbc1dbe336cdac SHA-256: 460069ea68b437416b7d77eb90412879dbe3295d44019841bf0fa0a5ff8cf1e0
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically referencing a "cyber monday sale" lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://leonvi.ru/123?utm_term=micro+center+cyber+monday+sale PDF link annotation
    • https://cdn.sqhk.co/niserutom/HhgnYii/slot_car_racing_sets_near_me.pdfIn PDF document text
    • http://tuvuvadirozo.iblogger.org/abhimaan_songs_320kbps.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497078/normal_5fec2413ed15d.pdfIn PDF document text
    • https://cdn.sqhk.co/marixefe/Fohh1Yg/best_base_clash_of_clans_town_hall_8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392451/normal_5ff01c27c41a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402711/normal_600b1f4ac6014.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/rafiralexezol/airtel_xstream_apk_android_tv.pdfIn PDF document text
    • http://tosivasode.epizy.com/anonytun_pro_versi_terbaru.pdfIn PDF document text
    • http://xifonefoje.epizy.com/hepatitis_b_viral_dna_test_report.pdfIn PDF document text
    • http://lojupefiduk.epizy.com/lafofozufujegodeli.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/77917204950.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/48855391776.pdfIn PDF document text
    • http://wijetifosoxi.epizy.com/72279984193.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22C 5332 bytes
SHA-256: 117727defdadb4336a90c0f360c924ef50cc12bf1222ba36065cc5cfe741aba8
font_01_sfnt_off0000e443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE443 11096 bytes
SHA-256: 3d69a40dde3575352c9f20b1a9364676c8d9f4573bf788456fb9dade575f0054

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