Malicious PDF — malware analysis report

Static analysis result for SHA-256 e45d1ea16cb52a5f…

MALICIOUS

PDF

71.7 KB Created: 2021-02-27 03:03:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 25ba0f4ec8a03bf07dd4af9b43d0a09b SHA-1: e5e7b3dfec7b79fdc9e39b92586fc8dd7d1f48f9 SHA-256: e45d1ea16cb52a5fb9f04a44772fb2e77098e2a17c9634b8ccec5e8c9c17ea1f
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 contains numerous embedded URLs pointing to disposable domains, suggesting a phishing or link-farming scheme. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/strik?utm_term=how+to+fold+graco+fastaction+stroller PDF link annotation
    • http://cardioactiveuficiale.site/2956402762598dxq.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/26816188539.pdfIn PDF document text
    • https://vokipokulolobu.weebly.com/uploads/1/3/4/0/134016984/basezufarumozatepag.pdfIn PDF document text
    • http://raisinshq.club/old_yeller_death_quote0a3pg.pdfIn PDF document text
    • https://ligonulijer.weebly.com/uploads/1/3/5/3/135318365/d8ac5f1c.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/35231987992.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/storyboard_template_a4_portrait.pdfIn PDF document text
    • http://bitcoins-profits.com/30539051934iv57d.pdfIn PDF document text
    • http://faxusupovetek.sportsontheweb.net/5497468374.pdfIn PDF document text
    • http://trikotoria.ru/54824517257cn6jy.pdfIn PDF document text
    • http://jakartapro.xyz/direct_and_reported_speech_exercises_onlineshm89.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/kokesatodixon/8013750932.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/bunny_live_mod.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_off0000da9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9B 5240 bytes
SHA-256: c0247a47300924531f4700e3ecceca5345e7be5f17f6b76e0574ccf2014fc204
font_01_sfnt_off0000ec90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC90 10596 bytes
SHA-256: 8b15cc44c4a2af9ff06b3eab8c91392b155efb44a7884989877a10295b3259de

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