Malicious PDF — malware analysis report

Static analysis result for SHA-256 86bcfe4d72a3beb5…

MALICIOUS

PDF

38.2 KB Created: 2020-08-28 08:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3754e2b01ae0afa031a33c0dda58dc5a SHA-1: 0fcea875cbea0f3cc5ca38b8359edcd0c58a985c SHA-256: 86bcfe4d72a3beb566ce2d7a8eb3edc0016486ef3d52f43f26bc57f5997def89
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body also contains a URL that appears to be part of a phishing or scam lure, directing users to click on a link that is presented as a PDF but leads to a malicious site. The presence of a callback lure further supports a scam or phishing intent. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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://ttraff.cc/pify?keyword=general+mobile+discovery+bilgisayara
    • http://zabafeduk.minhtamcharity.org/uploads/1/3/1/0/131071243/7521635.pdf
    • http://files.braaibeque.com/uploads/1/3/0/7/130775174/3392100.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/personality_vocabulary_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1782/files/xirot.pdf
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/89553413745.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/citati_lubovnie_romani_online.pdf
    • https://cdn.shopify.com/s/files/1/0432/5811/8312/files/bitlocker_password_recovery_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6597/files/40182987522.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0090/files/fovalozalufokapadogepema.pdf
    • https://cdn.shopify.com/s/files/1/0430/7186/4993/files/51984998356.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5185/files/composite_shapes_perimeter_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/appareil_respiratoire_humain.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000556d.bin
ff238bfeba8714e4653fc5bf5f1712f6015da4492f6811ec08f3e98aabaf2c31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x556D 5592 bytes
font_01_sfnt_off00006864.bin
7ab671fb3ca385869019ccb666fb526fbdbf876f562fee4ffe7abc28801ed43e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6864 10664 bytes

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