Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b2fd1e1dde739e…

MALICIOUS

PDF

62.2 KB Created: 2020-08-22 16:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79cc1cdff32c7ebb3302d4cf7af5797a SHA-1: 9b4c839846d24ed5ce2953a5944d30b8df658654 SHA-256: a5b2fd1e1dde739e9ae03d9026e56c4b10346398b7edd1a9d49e74906717388c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious domain, likely intended to trick the user into visiting a harmful site. The document body, though heavily obfuscated, contains text related to 'Crusader kings 2 traits guide' and mentions wkhtmltopdf, suggesting a lure. The presence of a link farm heuristic further indicates malicious intent to distribute links.

Heuristics 3

  • 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.
  • 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.com/pify?keyword=crusader+kings+2+traits+guide
    • http://files.musicrocksyourworld.net/uploads/1/3/1/3/131379904/xojisetaru-dagojowekani-mibigokaguj-bizesabiwukes.pdf
    • http://files.elliscme.org/uploads/1/3/2/7/132740362/kexawovowixivo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4423/1575/files/storyline_elearning_templates.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/82481334905.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/binirebujisoralabas.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/kumpulan_jurnal_akuntansi_keperilakuan.pdf
    • https://cdn.shopify.com/s/files/1/0429/9227/1519/files/48593747073.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/kefivaluxerazazo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6364/0213/files/vertual_dj_7_pro.pdf
    • https://cdn.shopify.com/s/files/1/0437/3679/3237/files/angular_reactive_form_valuechanges_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/joint_ownership_contract_templates.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_off0000b1b1.bin
3e40b1ac9b2c062461b976ea27d89d698cc97ea59e2db9bc83a04f7d3fa11af2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B1 5064 bytes
font_01_sfnt_off0000c2f9.bin
8b8f487302cfce62d306fe17ac49b1ee3e903e75a432b41ec9cba2b0c6207570		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F9 12728 bytes

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