Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e70bc2a5526a0ed…

MALICIOUS

PDF

39.5 KB Created: 2020-05-08 19:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 39b1c55f5d4495823abcf669be917e82 SHA-1: 3d03a052e37b815e56ce329f75869509120effb3 SHA-256: 4e70bc2a5526a0ed03d8e1ba84cbbe4cf4a67b3d7d7aaff7ea039bc8aed68255
156 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1598 TTPs: Gather Victim Identity Information

The PDF document contains a large number of external links, many pointing to other PDF files, suggesting a link farm or SEO poisoning tactic. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document explicitly requests sensitive recovery information from the user. The embedded URLs likely serve as part of this lure, directing users to potentially malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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 http://elizabethbrophy.com/uploads/1/3/0/7/130739021/130739021.html#tor+browser+dark+web+android PDF link annotation
    • http://greyknittykitty.com/uploads/1/3/0/4/130490687/5952262.pdfIn PDF document text
    • http://bethlehamdinner.com/uploads/1/3/1/3/131398243/fotegu-zamafibusumu-gexuxejiruba.pdfIn PDF document text
    • http://elrodengineeringllc.com/uploads/1/3/0/7/130739185/315852.pdfIn PDF document text
    • http://eaglerockjuice.com/uploads/1/3/1/3/131398244/koduzusuzowotub-ridozatipuludig.pdfIn PDF document text
    • http://cnoterecords.com/uploads/1/3/0/5/130542902/mapuliradobe.pdfIn PDF document text
    • http://autochipkeysandremotes.com/uploads/1/3/0/3/130313803/vunewukovim.pdfIn PDF document text
    • http://nowallsministry.net/uploads/1/3/1/4/131453352/1675813.pdfIn PDF document text
    • http://plantseverywhere.com/uploads/1/3/0/5/130542907/3650899.pdfIn PDF document text
    • http://studiotibo.com/uploads/1/3/1/3/131398345/8679473.pdfIn PDF document text
    • http://idartsmagstaug.com/uploads/1/3/1/3/131379381/menakujewirot_jaxijika.pdfIn PDF document text
    • http://divinewillschool.com/uploads/1/3/0/7/130774994/puwataxa_fupiguxosifaf.pdfIn PDF document text
    • http://may-i.life/uploads/1/3/1/3/131381111/8935a0.pdfIn PDF document text
    • http://wheelhouse.theater/uploads/1/3/0/7/130776483/9347001.pdfIn PDF document text
    • http://deanameyer.com/uploads/1/3/0/4/130435716/3870190.pdfIn PDF document text
    • http://talinasherbsandhealing.com/uploads/1/3/1/3/131398416/xibev-wumepo.pdfIn PDF document text
    • http://kglobalworld.com/uploads/1/3/0/6/130604446/jukomenenovaxajos.pdfIn PDF document text
    • http://syracusehandymanservices.com/uploads/1/3/1/4/131484133/2910303.pdfIn PDF document text
    • http://bynadiablicher.dk/uploads/1/3/0/9/130969608/kifikapojikovogi.pdfIn PDF document text
    • http://uniteachingeportfolio.com/uploads/1/3/1/3/131398085/349670.pdfIn PDF document text
    • http://utahhomesandlifestyle.com/uploads/1/3/1/3/131380031/zigalapedejiv.pdfIn PDF document text
    • http://vivtech.net/uploads/1/3/1/4/131438274/zikuxokine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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/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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEC 10424 bytes
SHA-256: 0932f482b1fff80c2c47c258e020ff22b608d41a3097c18e6c92010a03f9e62d

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