Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a53a3ed419dc747…

MALICIOUS

PDF

71.7 KB Created: 2021-03-25 05:41:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3a487e945ce3b5a271726b4168e997ed SHA-1: ce2ac29f1b67169455645b9227c8e66659cf5db7 SHA-256: 3a53a3ed419dc7477f6960dadebf795c605ade37127222d35f11338879e4f95c
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body and embedded URLs suggest a phishing lure related to popular media, directing users to a suspicious domain. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://golowaki.ru/strik?utm_term=fifty+shades+freed+on+youtube+tv PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379611/normal_5fd8d36463fa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463275/normal_60116dbc130ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495241/normal_60516f821122f.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/98198761750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392649/normal_60281ede28526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444110/normal_603cc97dc147f.pdfIn PDF document text
    • http://mesanezedid.mypressonline.com/juwose.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475863/normal_5ff4a1680b377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448743/normal_601d7a53463c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_6058fab71a430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409393/normal_6050ba6eee5c1.pdfIn PDF document text
    • http://lezofifividex.scienceontheweb.net/autoecologia_definicion.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426261/normal_600b0060e3282.pdfIn PDF document text
    • http://tidirakozodawon.getenjoyment.net/72104603189.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/tikorono.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426072/normal_5ff1256377b8f.pdfIn PDF document text
    • http://wiwulunomekig.iblogger.org/bulking_diet_plan_for_skinny_guys.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416790/normal_6001510683fad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366004/normal_5fca2cf25a764.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mawivevixovoxet.epizy.com/2003_harley_davidson_heritage_softail_classic_owners_manual.pdfIn PDF document text
    • http://nitubak.atwebpages.com/bibosodizijoxonuzujani.pdfIn PDF document text
    • http://mesobuze.epizy.com/fuvakotalasidik.pdfIn PDF document text
    • http://lugenizuridaj.atwebpages.com/samsung_uhd_tv_6290_40_inch.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AE 5220 bytes
SHA-256: cd69075d36d3c4e839aff01b22c3c6da399a5ab43e8a63e0859e0fd68a5d8d77
font_01_sfnt_off0000e574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE574 1940 bytes
SHA-256: 9717c572b491d895217c4e958acc8dae43b5536372e998b1a3c12f26fa080abe
font_02_sfnt_off0000eead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAD 9912 bytes
SHA-256: 5c89edfcabfee199a84de118d8a1d253d5024cf1bd5c7a8a07a5abf8985f3411

Open this report in the interactive analyzer, or submit your own file for analysis.