Malicious PDF — malware analysis report

Static analysis result for SHA-256 8050cad62205b09d…

MALICIOUS

PDF

73.2 KB Created: 2021-04-03 04:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: fa420f36797436e2465659ec18c0c630 SHA-1: c2939f5140ee7d749ca7a28baf90cd02d81574ae SHA-256: 8050cad62205b09d09d55a3fa2a1c4a3c6f0da90b8f2cd70850935773051bfdb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, with a primary focus on directing users to a dating-related website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to exploit users through deceptive content.

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://xezojetit.ru/wix?keyword=what+is+a+dating+site PDF link annotation
    • http://xagugudel.sportsontheweb.net/zebefuza.pdfIn PDF document text
    • http://tepoparupomo.medianewsonline.com/medical_abbreviations_quiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500425/normal_5fc572921c135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471692/normal_602f4313f3f87.pdfIn PDF document text
    • http://goxopisejeza.22web.org/zitaburiser.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381081/normal_6058d710e1d77.pdfIn PDF document text
    • https://nodajalij.weebly.com/uploads/1/3/5/9/135990600/87cae.pdfIn PDF document text
    • https://ramabubutimelu.weebly.com/uploads/1/3/4/5/134597411/3571229.pdfIn PDF document text
    • https://bafiredevidif.weebly.com/uploads/1/3/1/3/131384403/zidawufizamarixigo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501995/normal_604e04d009986.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jawozamamopenis.rf.gd/prefix_suffix_worksheets_7th_grade.pdfIn PDF document text
    • http://momibur.rf.gd/the_island_of_dr_moreau_streaming.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/wuzaganesuduze.pdfIn PDF document text
    • http://womawujun.atwebpages.com/kifigevapekokovab.pdfIn PDF document text
    • http://zikimopotefeva.epizy.com/xutogoguboteku.pdfIn PDF document text
    • http://jisufuwoj.epizy.com/zudim.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/22184182354.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/37211568305.pdfIn PDF document text
    • http://kebanibaru.epizy.com/waforakilu.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/cnc_boring_machine.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_off0000e1d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D9 4972 bytes
SHA-256: d2282565aec364632aabc2deb51d73801ab59150b5025fb83408cb9b6af02320
font_01_sfnt_off0000f2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CE 10992 bytes
SHA-256: bce291f2ef777cf1d8334aea9875117b4b586ece8b8cbc106595ebf4cccb634a

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