Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d79841a3ee05bb8…

MALICIOUS

PDF

13.6 KB Created: 2020-10-17 08:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fd7d93737ed47a02ac3719bbfc38eb22 SHA-1: 6df85b846de1e197417c9b50686a83899a82a947 SHA-256: 6d79841a3ee05bb88bd9e1b61f87807b3e65f4b7fcb88feec9090019e2b7d574
202 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document is designed as a lure, masquerading as a download for game DLC. It contains a high number of embedded links pointing to external PDF files, likely to manipulate search engine results or redirect users to malicious content. One of the primary links directs to known malicious redirector infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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.
  • 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 13 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://gettraff.ru/strik?keyword=digimon+story+cyber+sleuth+hacker%2527s+memory+dlc In PDF document text
    • https://wovasemuzusalej.weebly.com/uploads/1/3/1/6/131636629/sujemiliv-medozosezugijer.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/dezorafirusisu_tajeluzuk.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/fipatu.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/xedufubedug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369185/normal_5f87d6a669fd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5f8762d6385be.pdfIn PDF document text
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/25693309391f5.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/9165930.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/rezareludufiven-voxodopi.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/mujijarawenuwinosif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/leather_card_holder_pattern_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3534/3026/files/1414030562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/9929/2319/files/kemafotusom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/luxulijurarusid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1166/9667/files/today_in_naval_history_june_18.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4721/3464/files/94517116302.pdfIn PDF document text

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