Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5c0ba8fa9c7fa5…

MALICIOUS

PDF

70.9 KB Created: 2021-03-01 02:09:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 19795a88078186d82328e96d50742657 SHA-1: e390b473bf7bd184581481b96aa4483407c086a2 SHA-256: 7c5c0ba8fa9c7fa5a9b4c49db1ce6afad6aeb97999f8b0ae198abd85bfef7ad8
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://midufefew.ru/award?keyword=netgear+n150+router+specs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388158/normal_5fd82b3c41e1e.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/897444.pdfIn PDF document text
    • https://vokewubepil.weebly.com/uploads/1/3/4/4/134443825/7e6057dea7afe6.pdfIn PDF document text
    • https://mitojebani.weebly.com/uploads/1/3/2/7/132711961/3f98903f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_6018e8b247a6c.pdfIn PDF document text
    • https://vefonero.weebly.com/uploads/1/3/1/0/131070196/lavamifegatidi_nukosijo_bujum_kuxobunixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487005/normal_6038fc09358fc.pdfIn PDF document text
    • https://fuzefiwojagolo.weebly.com/uploads/1/3/5/3/135308179/sofina.pdfIn PDF document text
    • https://rusajilema.weebly.com/uploads/1/3/4/8/134853265/8dec934f66aa.pdfIn PDF document text
    • https://kimuremosov.weebly.com/uploads/1/3/4/7/134732255/rafuw.pdfIn PDF document text
    • https://nugazemagutum.weebly.com/uploads/1/3/4/3/134346004/ac4e7e8.pdfIn PDF document text
    • https://jesisime.weebly.com/uploads/1/3/4/8/134886507/pumizogo.pdfIn PDF document text
    • https://kofitabalu.weebly.com/uploads/1/3/0/7/130775223/piniwitij.pdfIn PDF document text
    • https://rudunusom.weebly.com/uploads/1/3/4/6/134602981/7139504.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nakepusigazu.epizy.com/24538222796.pdfIn PDF document text
    • http://widafasamuj.epizy.com/fabokavukagi.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/pevanotitifemo.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/dixinegavabevofipawufozu.pdfIn PDF document text
    • http://gajedimigifupet.epizy.com/54256625334.pdfIn PDF document text
    • http://durudafakeluva.epizy.com/brothers_tale_of_two_sons_apk.pdfIn PDF document text
    • http://tutunod.epizy.com/87446081129.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_off0000d768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD768 5356 bytes
SHA-256: 209d630e4e9084c74d8e4f64f40d369ed276229e2591769b63847186b2e6168d
font_01_sfnt_off0000e9be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BE 10808 bytes
SHA-256: 832460afa55be53c3786da95aaedac822d27e27c8c9b6ac3d35f129c7b120a02

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