Malicious PDF — malware analysis report

Static analysis result for SHA-256 29be34048de6f90c…

MALICIOUS

PDF

78.6 KB Created: 2021-01-03 22:26:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 0e2782b93a9a3718f581fd3d8fdc06da SHA-1: 998f93f52b92b8a0b0dce06fc2d26c0878acc56d SHA-256: 29be34048de6f90c7aa575ca1f770251b9c5fd23154bc93e6593086731bf49fc
216 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing attack, specifically a recovery secret lure, aiming to trick users into divulging sensitive information. The presence of numerous external links, including one pointing to a potentially malicious domain, suggests an attempt to redirect users to phishing sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent.

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.
  • 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 https://trafficel.ru/123?utm_term=minecon+2016+cape PDF link annotation
    • https://cdn.sqhk.co/wotutovebo/iahe9z4/jopovilemefak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408589/normal_5fc3b5bc26a73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_5fa154ef9d3a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377377/normal_5fae5486d6da5.pdfIn PDF document text
    • https://cdn.sqhk.co/murajefovel/hiVvic0/cut_grass_when_wet_or_dry.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375696/normal_5fc8448396347.pdfIn PDF document text
    • https://kojaresojew.weebly.com/uploads/1/3/4/3/134312518/mowisivawazadip_gubonaribojolo_piwezes_zepoxu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471513/normal_5fecc75340cd6.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/78496591633.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/71937705181.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71626cd8-822c-4544-a462-ec3be12845ac/28111255372.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/lettering_template_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f57c782c-c3ca-4e82-8acf-de0dd729d55b/neatcell_picosecond_laser_pen_tattoo_removal.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/gazatozorifuk.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_off0000f540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF540 5104 bytes
SHA-256: 440420aae591d26d4f3a82ef085004211c5c0cf9d0dea704147efbc459e879cf
font_01_sfnt_off000106c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C4 11556 bytes
SHA-256: 5184283a81fc9e3472bfe745c255915bb85d511cb5601aff0134e299fa61b9f2

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