Malicious PDF — malware analysis report

Static analysis result for SHA-256 7762a9661b6c1a77…

MALICIOUS

PDF

84.8 KB Created: 2021-03-21 02:48:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0fdc29a481fd2b40cf63d40e33ac6436 SHA-1: 992943fe08784eb11840eba02ea2c1f0b7f68844 SHA-256: 7762a9661b6c1a77e460edb222dc55c34d7b0409cdb524c26b2eea632a477806
126 Risk Score

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 0.9995

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://lozipotod.ru/strik?utm_term=fios+voice+remote+won%2527t+pair+with+tv PDF link annotation
    • http://vinograd.io/konebonisitumutelunosgty5.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/dmzabvl/lazagolig.pdfIn PDF document text
    • http://xedijama.getenjoyment.net/bioethics_in_nursing.pdfIn PDF document text
    • http://taygerr.com/fegunnsiur.pdfIn PDF document text
    • https://cdn.sqhk.co/buwozumu/8NQjbii/26291323391.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/xgjEii3/3678522457.pdfIn PDF document text
    • https://cdn.sqhk.co/worijekegir/iicjcpH/video_call_baat_karne_wala_apps.pdfIn PDF document text
    • http://kuzojud.66ghz.com/lab_configuring_ospfv2_advanced_features_answers.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/vivovejobilew.pdfIn PDF document text
    • http://exclusmxpn.com/govufaledomir4sg.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamijiti/ixhczjb/repefixi.pdfIn PDF document text
    • http://helpverifedbadges.com/essential_university_physics_volume_2_3rd_edition_answersx7hh1.pdfIn PDF document text
    • http://xarapover.mygamesonline.org/64794423953.pdfIn PDF document text
    • http://solent.bar/axe_vs_old_spice_hair_paste7o4a9.pdfIn PDF document text
    • http://idealicait.website/wavulidosilezotuwzyat.pdfIn PDF document text
    • https://cdn.sqhk.co/gulaxemetila/cuMljak/indoor_rowing_championships_ireland.pdfIn PDF document text
    • https://cdn.sqhk.co/jawafurovif/Dhcia8i/lukumejadoxenibitokatitur.pdfIn PDF document text
    • http://fortuneo.biz/fufukikerususzrtl.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
    • http://surewefuwiba.rf.gd/routine_eeg_guidelines.pdfIn PDF document text
    • http://rivowotow.epizy.com/can_you_rent_kindle_books_from_amazon.pdfIn PDF document text
    • http://finabupotokuko.epizy.com/how_to_use_audacity_for_music_production.pdfIn PDF document text
    • http://jalameki.epizy.com/65748179449.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE95 5072 bytes
SHA-256: 0723ab758503cc39aae43bd301445f1cad30747048f5270b5fae27977291f030
font_01_sfnt_off00010fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB4 12008 bytes
SHA-256: f4583f49321bdf3a245eae19930a6e8af0e8ccb3a6885495259ef5a51ac9dd81
font_02_sfnt_off0001373c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1373C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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