Malicious PDF — malware analysis report

Static analysis result for SHA-256 9747a1db5b144e2f…

MALICIOUS

PDF

55.2 KB Created: 2020-08-08 02:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ec8528cd25f3fc814b0c8717bd48a81 SHA-1: 837fc80ac4098ae882b88bdaf18798ef07fd9b6b SHA-256: 9747a1db5b144e2fd2f83eedc71f30595f425907358468ba7cc896bb5b8bd287
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, embedding numerous external links. A critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=cessna+206+turbo+poh+pdf'. This suggests the document is designed to lure users to malicious sites, likely for phishing or distributing further malware. The presence of many Shopify-hosted PDF links, while some are benign, is part of the SEO link farm tactic.

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.ru/pify?keyword=cessna+206+turbo+poh+pdf
    • http://files.marialimardo.com/uploads/1/3/0/7/130776809/tafosapafawut_lipoki_dosavixefududin_tazurisewaraja.pdf
    • http://files.pathwaystoinclusiveeducation.com/uploads/1/3/2/6/132683000/tolul.pdf
    • http://jubetuna.teamnosa.com/uploads/1/3/1/4/131453247/juwatenivafoxe-miridakez.pdf
    • http://bepel.jaystextiles.com/uploads/1/3/2/3/132302780/nujazolaxezisotebeg.pdf
    • https://cdn.shopify.com/s/files/1/0436/2302/2752/files/st_louis_blues_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/94539281308.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/3362803533.pdf
    • https://cdn.shopify.com/s/files/1/0449/3757/6603/files/5_o_clock_t_pain.pdf
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/a_practical_introduction_to_bayesian_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/73873463869.pdf
    • https://cdn.shopify.com/s/files/1/0431/2586/6662/files/43415999882.pdf
    • https://cdn.shopify.com/s/files/1/0430/1986/2179/files/sujogiwozow.pdf
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/77284309812.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/54650052365.pdf
    • https://cdn.shopify.com/s/files/1/0434/6668/6629/files/64713200939.pdf
    • https://cdn.shopify.com/s/files/1/0428/5317/1356/files/emotional_intelligence_journal_articles.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_off00009983.bin
1fd501935557f4730332b66de3016b7aa323737eb3316e5ffd0344e7b76b4368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9983 5572 bytes
font_01_sfnt_off0000ac5b.bin
efa80cf8f46289b47f8a1a3ec80abb621372d10ebd61d225047de7306fea4783		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC5B 10536 bytes

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