Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c7a29fcb2321c0…

MALICIOUS

PDF

40.5 KB Created: 2020-12-20 16:20:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 364546846903210e858de265b03e7abe SHA-1: 4e961b7ac78321dabeadc85c78ad2fb8e7f41e39 SHA-256: 58c7a29fcb2321c00bb443dc4b8deeef7d6c25578f715973a7058d2daa7dfc19
262 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document functions as a phishing lure, employing a screenshot of text as a visual deception. It contains multiple links, including one pointing to known malicious redirector infrastructure at 'traffine.ru'. The document also hosts a link farm on disposable hosting, suggesting an attempt to distribute malicious content or SEO spam. The presence of these elements, combined with ClamAV detection and ML flagging, indicates a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8977

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
  • 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.
  • 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 40 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.
  • 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://traffine.ru/wb?keyword=baking%20chocolate%20recipe%20cocoa%20powder In PDF document text
    • https://bidovakufizal.weebly.com/uploads/1/3/4/5/134586087/mixosefimom_namunejopopenav_wumexujumagedin_sutigoz.pdfIn PDF document text
    • https://bekijarodik.weebly.com/uploads/1/3/4/6/134617997/7237958.pdfIn PDF document text
    • https://balomufe.weebly.com/uploads/1/3/4/5/134594694/2f14a894adec.pdfIn PDF document text
    • https://dedopaka.weebly.com/uploads/1/3/4/4/134498192/6078595.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/rabiwodemutim-duwuxe.pdfIn PDF document text
    • https://kutenenoki.weebly.com/uploads/1/3/4/7/134704657/2800578.pdfIn PDF document text
    • https://pebepatesova.weebly.com/uploads/1/3/4/4/134447190/47470fa.pdfIn PDF document text
    • https://jorojesa.weebly.com/uploads/1/3/4/8/134861508/rotizon.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/57301261231.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52b71a87939686423f1f1/t/5fd60be77fc52c20691a5515/1607863272621/whatsapp_comedy_video_karna_hai.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/gitigu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf84f1e3661f04ea8bf7ab/t/5fcfa1438b174454e9a7bc10/1607442756028/pitujipapilinogovavevi.pdfIn PDF document text

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