Malicious PDF — malware analysis report

Static analysis result for SHA-256 be8714fd31a58306…

MALICIOUS

PDF

43.2 KB Created: 2020-08-08 10:27:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d6d177e269c969d4c135c5a520df39b SHA-1: de48e5fd8fa623179c4f27576ab20962c15871cd SHA-256: be8714fd31a58306fa7d85d2094aa330e866340b5a5cc5e232ea5a5d1877f0d0
120 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a known malicious domain (ttraff.com), disguised with a seemingly benign keyword. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. The document body, though heavily obfuscated, contains the same keyword used in the malicious URL, suggesting a social engineering attempt to trick users into clicking the link. The presence of numerous other links, many pointing to Shopify, indicates a link farm or SEO poisoning tactic, as flagged by PDF_SEO_LINK_FARM.

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=classroom+games+for+high+school+pdf
    • http://files.idmybee.com/uploads/1/3/0/8/130813692/1589729.pdf
    • http://files.lakemerrittoneness.org/uploads/1/3/2/3/132303163/1232648.pdf
    • http://files.thefeelgooddiary.com/uploads/1/3/1/0/131070212/riridebukowiba.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/70917404256.pdf
    • https://cdn.shopify.com/s/files/1/0433/8935/4149/files/bolirolozugizevepiboxale.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/91501291442.pdf
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/the_art_book_big_ideas_simply_explained_vk.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/89806060988.pdf
    • https://cdn.shopify.com/s/files/1/0429/7631/3503/files/reveziwo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/paluwurolaziretoze.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/36983603873.pdf
    • https://cdn.shopify.com/s/files/1/0430/4060/4314/files/49404201776.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/62658613941.pdf
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/texas_drivers_license_renewal.pdf
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/11784818002.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/50945247851.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_off00006ba9.bin
1b09cb6853fba9582329f7a22404d10e951fd7f1ae5223c79d5510741fba2cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA9 5476 bytes
font_01_sfnt_off00007e14.bin
0633c9168a3255b29aab006239b41c922b515005310968a2886807da61f688ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E14 9952 bytes

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