Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2bcda0d216523ee…

MALICIOUS

PDF

66.0 KB Created: 2020-11-19 04:42:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f845cf39c796832d621d93b1d2c146f2 SHA-1: 165212c0e1cb8cafaed3f086d13192707e3c241e SHA-256: d2bcda0d216523ee835dad2855c25e0b5f6a2c5d86d5b491c04cd50a56dcb4b7
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a link farm detection and a ClamAV signature for a phishing trojan. It contains numerous external links, with the primary one being `https://traffnew.ru/123?utm_term=6+month+bible+reading+plan+pdf`. The presence of a link farm suggests an attempt to distribute traffic to various potentially malicious sites, likely for phishing or malware delivery.

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://traffnew.ru/123?utm_term=6+month+bible+reading+plan+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385026/normal_5f8f76f99c401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393197/normal_5f9382021f0b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424009/normal_5fb3744d02143.pdfIn PDF document text
    • https://nosadipopone.weebly.com/uploads/1/3/4/4/134470180/7e05ab.pdfIn PDF document text
    • https://gupenuwod.weebly.com/uploads/1/3/4/5/134518336/c5edb9a7959d69d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404105/normal_5f95f794646f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454803/normal_5fa11eb453d3c.pdfIn PDF document text
    • https://tufobedix.weebly.com/uploads/1/3/4/4/134431979/8539417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452593/normal_5fa9475d4409a.pdfIn PDF document text
    • https://pameduvexeligim.weebly.com/uploads/1/3/4/5/134579292/7ecf6c787b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/71833dab-f586-45b4-bd00-c0f863dcf32f/man_of_steel_2013_mp4_google_drive.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_off0000c627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC627 5476 bytes
SHA-256: 7c8911fec11f72428a34a3a28324d71dfbfa66658b19baee8c5384c5256a4d6c
font_01_sfnt_off0000d892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD892 10164 bytes
SHA-256: 1c2ebaba80cbc8d0e7d16363abab90c4fadee837a1721ba2739d995aee9e6f3a

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