Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e843253de9a188…

MALICIOUS

PDF

72.5 KB Created: 2021-03-04 04:37:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8eb324e6240f395ef1f3bd2cf3a286a5 SHA-1: 1cf220fd5c2fe81b508573b3d54e2d5fa1e8e047 SHA-256: a2e843253de9a188845df9d72af0047e0aea1452da100abccb04a9fb94e7f136
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/award?keyword=the+prosperous+coach+pdf+download PDF link annotation
    • https://povurumupun.weebly.com/uploads/1/3/4/8/134884194/fuzola-mugogumilek.pdfIn PDF document text
    • https://bumibosawo.weebly.com/uploads/1/3/4/3/134374517/zorosa-mikebu-molun.pdfIn PDF document text
    • https://wotudopis.weebly.com/uploads/1/3/4/6/134679731/bumovov-jixatuvelisofe.pdfIn PDF document text
    • https://teligodinawam.weebly.com/uploads/1/3/4/4/134457670/2b7d9ea.pdfIn PDF document text
    • https://bolowotusupiwam.weebly.com/uploads/1/3/5/3/135300352/676191.pdfIn PDF document text
    • https://nateguwab.weebly.com/uploads/1/3/1/4/131453796/6668436.pdfIn PDF document text
    • https://setopotuvojinow.weebly.com/uploads/1/3/4/8/134877086/5517530.pdfIn PDF document text
    • https://gobadinemi.weebly.com/uploads/1/3/5/2/135299992/90b7a2dc143aaa1.pdfIn PDF document text
    • https://kinigapiluxuke.weebly.com/uploads/1/3/4/8/134863840/gexawozebapire.pdfIn PDF document text
    • https://zakepanitug.weebly.com/uploads/1/3/5/9/135977879/bofabakade.pdfIn PDF document text
    • https://ranedesipa.weebly.com/uploads/1/3/1/3/131398497/zetapowiwat-lewex.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/2242922.pdfIn PDF document text
    • http://jufidozotazi.66ghz.com/lagu_bon_jovi_always_acoustic.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jegivumupokafar.epizy.com/15584650443.pdfIn PDF document text
    • http://nugopedivewe.rf.gd/oster_22_quart_roaster_oven_instructions.pdfIn PDF document text
    • http://rejinivak.rf.gd/98459177964.pdfIn PDF document text
    • http://zotuxegusam.epizy.com/stomach_cancer_symptoms_in_tamil.pdfIn PDF document text
    • http://venuburut.rf.gd/23699042048.pdfIn PDF document text
    • http://texaliborobiko.epizy.com/free_letter_worksheets_for_pre_k.pdfIn PDF document text
    • http://fawosafo.epizy.com/galedej.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_off0000debb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBB 5284 bytes
SHA-256: 4b30956b65a6e0de71357d1204e0f0b3b919a3a03067d80422383c13f807d66d
font_01_sfnt_off0000f0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C1 10576 bytes
SHA-256: 9fe022de9da72f73499dbfbe5f5a5c02c0f049c7553075154b30e8ae3876963a

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