Malicious PDF — malware analysis report

Static analysis result for SHA-256 4395b58527e9b8ef…

MALICIOUS

PDF

49.6 KB Created: 2021-01-13 14:29:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1afd5085fab223fd8dd80c39f53a8d06 SHA-1: 81f7eff5f5f731c8fae97ffdf986d0867f9126b7 SHA-256: 4395b58527e9b8efd5b8ab23d7eac1eefc176ddb9a0fd68d07ed9fa34aea11f7
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains an image-based interface with a clickable link directing to 'https://traffnew.ru/aws?utm_term=blount+county+inmate+information', suggesting an attempt to redirect users to a malicious site. The document's structure and embedded URLs indicate it's part of a link farm designed to obscure the ultimate destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9421

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 49 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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
  • 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://traffnew.ru/aws?utm_term=blount+county+inmate+information
    • https://vunorizuwuxina.weebly.com/uploads/1/3/0/7/130774993/bowefebefaji.pdf
    • https://static.s123-cdn-static.com/uploads/4450417/normal_5ff623ba14a74.pdf
    • https://cdn.sqhk.co/vigefifobot/OA2ojhi/66307599437.pdf
    • https://maludanojuwido.weebly.com/uploads/1/3/4/5/134591959/lonedopusipi-maselogafivale-mozuroregi-xugolemi.pdf
    • https://cdn-cms.f-static.net/uploads/4413850/normal_5fc12fd99418d.pdf
    • https://cdn-cms.f-static.net/uploads/4366362/normal_5fc02f9d127e2.pdf
    • https://site-1174852.mozfiles.com/files/1174852/v_moda_crossfade_wireless_2_codex.pdf
    • https://site-1168003.mozfiles.com/files/1168003/5177298090.pdf
    • https://cdn-cms.f-static.net/uploads/4462696/normal_5fa815006ac3d.pdf
    • https://site-1220394.mozfiles.com/files/1220394/nowiwo.pdf
    • https://cdn.sqhk.co/mapibeze/ihtheV9/stick_with_the_girl_who_loves_you_quotes.pdf
    • https://site-1168384.mozfiles.com/files/1168384/92329948685.pdf
    • https://s3.amazonaws.com/jotizifime/42205515768.pdf
    • https://s3.amazonaws.com/punagilelabon/league_of_legends_runes_guide_caitlyn.pdf

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