Malicious PDF — malware analysis report

Static analysis result for SHA-256 d314f0936fbe5305…

MALICIOUS

PDF

64.2 KB Created: 2020-12-26 01:19:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 67668c3445f9787aaa7d06f233408071 SHA-1: 0318e6211013df09a2454fc39f5aef4ebaa52888 SHA-256: d314f0936fbe5305951670f85aaef0b0540ad8d286f76fbe66ed02b058d6f322
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many pointing to Weebly and other hosting services, suggesting a link farm or redirection mechanism. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external URIs strongly suggest it's designed to redirect users to potentially harmful content, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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/123?utm_term=nautical+ceiling+fan+pull+chains PDF link annotation
    • https://bonivodetago.weebly.com/uploads/1/3/4/5/134517527/gawexosepugazi-jijuxajuvigame.pdfIn PDF document text
    • https://kuvinonufero.weebly.com/uploads/1/3/4/3/134307364/4189a90a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455670/normal_5fd7abbde0ea0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501659/normal_5fcaf792d5be3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f8baac03a5fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375525/normal_5fc8263c62d41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382953/normal_5f9e5bea34424.pdfIn PDF document text
    • https://cdn.sqhk.co/gebijowokobe/sbnjhhj/dj_sound_effects_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/xevuvuxene/ibhafgf/car_racing_tracks_in_australia.pdfIn PDF document text
    • https://kolerekum.weebly.com/uploads/1/3/4/3/134350376/4256104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5f9d7ef81fbfb.pdfIn PDF document text
    • https://cdn.sqhk.co/febenanedibu/hlhIhhr/text_twist_turbo_cheat.pdfIn PDF document text
    • https://cdn.sqhk.co/wixadigizal/Qij9idF/80336441466.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/sivanira/cataclysm_dark_days_ahead_survival_guide.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_off0000c218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC218 5152 bytes
SHA-256: ff3a1ac290f7cf5ccab122d3f3dcfff1d5a7d56d95dd5b188e16b1db17c22150
font_01_sfnt_off0000d3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B0 9524 bytes
SHA-256: 150e77cbe3804eb99b36cce845a0bbacf4667ed1992608f6303d9d47de921bc9

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