Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b229eed546dc55…

MALICIOUS

PDF

71.3 KB Created: 2021-02-21 23:22:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 03b9c634b49d8a3ab1ebb1f86b4ed88c SHA-1: 3a26ceb4e0d3fbb6eb22cc93c3dedd1ec42928c2 SHA-256: 08b229eed546dc55f220a34dc07d4e1ecfde5cf5b36c91f88eb5d04ffb79e517
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=welcome+speech+for+chief+guest+in+army PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421944/normal_5ffc0ffe14a1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384484/normal_600f04fc43116.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445890/normal_60004787b52cf.pdfIn PDF document text
    • https://pavofadibap.weebly.com/uploads/1/3/4/3/134370944/6411106.pdfIn PDF document text
    • https://watepiwod.weebly.com/uploads/1/3/2/7/132710700/diwitenaf.pdfIn PDF document text
    • https://tupodawemizaz.weebly.com/uploads/1/3/4/5/134594588/7627233.pdfIn PDF document text
    • http://oneitshop.info/deborah_harkness_all_souls_trilogy_free_download35scn.pdfIn PDF document text
    • https://nekazexupogufeg.weebly.com/uploads/1/3/1/4/131454238/5815841.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389361/normal_601b014c43768.pdfIn PDF document text
    • https://boxoxezerutevok.weebly.com/uploads/1/3/4/3/134317212/xuvezuva.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/vonusirukete/pumejitumufufowosajifiw.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/jasc_paint_shop_pro_7._02.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_off0000dac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC9 5544 bytes
SHA-256: dd32ebd7dad3f857d3201ab2712329782711f1fbfe5d1084808e26383c87bed5
font_01_sfnt_off0000ed91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED91 10120 bytes
SHA-256: 2fb49bd7845b05e137676dd9ebde4d51ea3f0aaf88272f2f22d467138370b838