Malicious PDF — malware analysis report

Static analysis result for SHA-256 e618691353fb4389…

MALICIOUS

PDF

82.8 KB Created: 2021-03-04 05:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3dc0eca92f00a17b39ebd7bba6b97b05 SHA-1: fd5f557bf54f1c2b0329fe5b7daade9b6d6cd268 SHA-256: e618691353fb43893f1e403e01c52361fe93e60b52166c56290856aff05f20e5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://xajibur.ru/strik?utm_term=sony+str-dn840+specs PDF link annotation
    • http://fitit.space/74091375711yxj4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460060/normal_5fdc6e1898e3a.pdfIn PDF document text
    • https://cdn.sqhk.co/giruzegovu/bm3yibF/fire_alarm_push_button_sign.pdfIn PDF document text
    • https://cdn.sqhk.co/liregagibago/S5hb5uh/sewokakiwifug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495691/normal_5fd336b7735ba.pdfIn PDF document text
    • http://rerubin.space/descargar_biblia_cristianam6gfy.pdfIn PDF document text
    • http://xovuwut.iblogger.org/how_to_fix_install_black_cartridge_error_on_hp_laserjet_printer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402960/normal_5ffb6f87ce4be.pdfIn PDF document text
    • https://cdn.sqhk.co/tememukafosu/KjfcFGS/84552533673.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387922/normal_600dd2e6eaf7b.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/50459221598c3cpn.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/aIjegjj/aliexpress_hair_bundles_with_closure_deep_wave.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzalolotagi/djijhn2/vexixemasuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421637/normal_5fe5d2ddd7e01.pdfIn PDF document text
    • https://cdn.sqhk.co/beledufe/hdHjiLc/zaloluleramedubatol.pdfIn PDF document text
    • https://cdn.sqhk.co/wujozuzewed/nifggrb/war_planet_apes_full_movie_download_in_tamil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/12908076690.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/drf_breeders_cup_past_performances.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/zufimowetajezirada.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/lupasir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B0 5224 bytes
SHA-256: 8439c54a3277bbfc9f97880769ebab23bb0ad1b32477695f2d6271ca18a816ef
font_01_sfnt_off00010490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10490 13716 bytes
SHA-256: 594d35e20b6366d0a430d176e49f747745142963a6e09a9bd428d5478b977c9b
font_02_sfnt_off00012f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F8F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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