Malicious PDF — malware analysis report

Static analysis result for SHA-256 941a1df7536ece34…

MALICIOUS

PDF

62.7 KB Created: 2020-08-08 18:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b373f6cf92bb882e9b37a73d4333f24 SHA-1: eccd4068fbc63c1a26d97fa343e5ff4f78049662 SHA-256: 941a1df7536ece344669b9e39cad94a769968a83b1325d9732ea1b951f33c67d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is designed to redirect users to another location, likely for malicious purposes. The document body, though heavily obfuscated, contains the same URL, reinforcing its role in the attack. The presence of numerous external PDF links, as indicated by the 'PDF_SEO_LINK_FARM' heuristic, suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious ends.

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=vectors+equations+of+lines+and+planes+pdf
    • http://files.theperfectpigcompany.com/uploads/1/3/0/7/130775308/4278444.pdf
    • http://tasageveg.magnusaircraftinc.com/uploads/1/3/1/4/131406286/zerogejo.pdf
    • http://files.mondialprices.com/uploads/1/3/0/9/130969402/83a44aa.pdf
    • https://cdn.shopify.com/s/files/1/0436/1096/4131/files/19476259517.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/95196903789.pdf
    • https://cdn.shopify.com/s/files/1/0431/0050/4217/files/sozerilemu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3776/0408/files/rawen.pdf
    • https://cdn.shopify.com/s/files/1/0434/6127/9896/files/dipufifi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4512/5281/files/pelebofisatefarew.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/lifevabamadixugisalam.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/lizenetuvur.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/25192983089.pdf
    • https://cdn.shopify.com/s/files/1/0429/4888/6684/files/initiative_versus_guilt.pdf
    • https://cdn.shopify.com/s/files/1/0433/0989/1742/files/99065028994.pdf
    • https://cdn.shopify.com/s/files/1/0438/1969/6290/files/gloomhaven_solo_scenario_items.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/32872759375.pdf
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/dukufuwenefezizoter.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_off0000b036.bin
e9a677750ae0012fc674da38c6a72970f45d42f1457d5a7562f55b26c4405141		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB036 5240 bytes
font_01_sfnt_off0000c21e.bin
a291bbe8c3638216c6c1a07620be6b8803e13dae6de174fbe52b65b2a1069700		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC21E 13504 bytes

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