Malicious PDF — malware analysis report

Static analysis result for SHA-256 329a9b5262af4e18…

MALICIOUS

PDF

77.1 KB Created: 2021-02-27 04:25:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5120d5165efa1b3a7589dce26d1380e0 SHA-1: e2610f0465a0d4a2c0d0c0481cc2bf1f2852f218 SHA-256: 329a9b5262af4e18e1736d2a30445a5750cc4b644add641a2e024aebf164d1b2
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classification and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains or services like Weebly, suggesting a link farm or SEO manipulation tactic. The embedded URLs and the nature of the heuristics strongly suggest the document's primary purpose is to redirect users to malicious or phishing sites, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/strik?utm_term=parrot+ck3100+musik+bluetooth PDF link annotation
    • http://copytoshka.ru/livewire_cables_reviewskn1n.pdfIn PDF document text
    • https://cdn.sqhk.co/riketumes/gejhjbs/wetorofaregedoxemawese.pdfIn PDF document text
    • https://rusekawavupor.weebly.com/uploads/1/3/4/0/134096427/vowufegaruwawexoso.pdfIn PDF document text
    • https://kelesive.weebly.com/uploads/1/3/0/8/130874426/8618152.pdfIn PDF document text
    • https://vuguzakinizole.weebly.com/uploads/1/3/4/4/134493236/xizapumugofur.pdfIn PDF document text
    • https://kaledawuvilef.weebly.com/uploads/1/3/4/7/134727412/c179b01c31.pdfIn PDF document text
    • http://italiahot.space/whistle_song_320kbpsmdpxo.pdfIn PDF document text
    • https://dulumomotuvubu.weebly.com/uploads/1/3/4/7/134759228/5200788.pdfIn PDF document text
    • http://verification-help.com/85843011230kr02h.pdfIn PDF document text
    • https://mokegeninu.weebly.com/uploads/1/3/4/0/134017711/f2e90b1c.pdfIn PDF document text
    • http://torchland.xyz/varunyh8ny.pdfIn PDF document text
    • http://mif-smeh.space/vikuzeliki91tu.pdfIn PDF document text
    • http://online-bestshop.xyz/convert_to_image_using_imagemagick_in_php4oe1a.pdfIn PDF document text
    • https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/rejodel-kituwobu-jivawazokota-pevaje.pdfIn PDF document text
    • http://vomuniwawan.iblogger.org/bedakadabowurawaxelu.pdfIn PDF document text
    • https://dugiwisevur.weebly.com/uploads/1/3/1/4/131437249/4136057.pdfIn PDF document text
    • https://wugepugozufov.weebly.com/uploads/1/3/4/7/134744675/3956252.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D0 3432 bytes
SHA-256: d2c572c750a0cf3afc243cf7fce91ee744a75630a64697f3e7a1b0b1d5eef0ad
font_01_sfnt_off0000ed2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2F 5604 bytes
SHA-256: f45d00fc103222369116b9855be83a6a877df8bd8e3248c949fc0a80516f8dfe
font_02_sfnt_off00010015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10015 11032 bytes
SHA-256: 96b039fc201f89a4f7d9f4262058721a72c7b8ff1c3362f46d022707451ef093

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