Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5c036108c0aeee…

MALICIOUS

PDF

38.1 KB Created: 2020-11-14 20:13:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c59ccbc886c504e433881891e61b34b5 SHA-1: a846d19dc17d011b6922981377d943683458927b SHA-256: 6a5c036108c0aeee114a09649f73624299bd892fc17af1ee273f49c1140e3dab
232 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF is identified as a phishing lure due to its image-only nature and a click-outward action. It contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'https://cctraff.ru/aws?utm_term=supervisor%2527+s+accident+investigation+report+form'. Additionally, it exhibits characteristics of a link farm, with numerous external PDF links, including 'https://kezofufilulo.weebly.com/uploads/1/3/4/4/134488682/fd7f40b3ebef940.pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6721

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://cctraff.ru/aws?utm_term=supervisor%2527+s+accident+investigation+report+form
    • https://kezofufilulo.weebly.com/uploads/1/3/4/4/134488682/fd7f40b3ebef940.pdf
    • https://cdn-cms.f-static.net/uploads/4389793/normal_5f9e673c8be2a.pdf
    • https://cdn-cms.f-static.net/uploads/4450138/normal_5fa05b32963a7.pdf
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/xilaxiv.pdf
    • https://cdn-cms.f-static.net/uploads/4375203/normal_5f8eb1eb82868.pdf
    • https://cdn-cms.f-static.net/uploads/4393353/normal_5faa7bbfd3d65.pdf
    • https://luvatuxi.weebly.com/uploads/1/3/4/3/134321506/laxulagevipeg_piwipavub_duradogimipef_tesifugibanuzo.pdf
    • https://s3.amazonaws.com/zewimu/tableau_server_administrator_guide.pdf
    • https://s3.amazonaws.com/vifusupegiza/81598886787.pdf
    • https://s3.amazonaws.com/gotenukevepunin/manual_vw_gti_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/ace5b1fb-946d-436b-8272-c13f4ab9c00a/xotalaxexibozesareto.pdf

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