Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbf17d961df3f0e…

MALICIOUS

PDF

44.9 KB Created: 2020-08-19 06:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46937fefc77e3a47fbcfd31376131ef3 SHA-1: 31770f6119a1602ee26e5d74b0c6bb236d838547 SHA-256: afbf17d961df3f0e8aedd484c31d958576c655c6270ec059887abbd9e003ccf8
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the malicious URL. The presence of numerous links, many hosted on platforms like Shopify, suggests a link farm designed to obscure the ultimate destination and potentially engage in SEO poisoning to attract victims.

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=south+america+map+pdf
    • http://files.drjohndegarmofostercare.com/uploads/1/3/0/8/130874253/nigunobule.pdf
    • http://files.oasisensembles.org/uploads/1/3/0/7/130738639/xutatovawelezuvego.pdf
    • http://boluro.platnymscloset.com/uploads/1/3/1/4/131406515/5568462.pdf
    • https://cdn.shopify.com/s/files/1/0434/7707/4086/files/jusotexerikose.pdf
    • https://cdn.shopify.com/s/files/1/0436/4258/5241/files/pardoner_s_tale_summary.pdf
    • https://cdn.shopify.com/s/files/1/0430/6698/2561/files/icao_airport_code_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/9349/0838/files/can_t_find_header_files_for_ruby.pdf
    • https://cdn.shopify.com/s/files/1/0437/5448/7957/files/soluliporume.pdf
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/1328223944.pdf
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/ladegosevazanefofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/8258989568.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9816/files/52787872632.pdf
    • https://cdn.shopify.com/s/files/1/0439/1557/5464/files/diratawefigivupesimidewoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/samsung_galaxy_s10_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/fourier_analysis_experiment.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_off00007164.bin
305df3327305084c5931177babde87350c89275dad1473b329559ae47f669993		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7164 5288 bytes
font_01_sfnt_off0000833d.bin
c6dc7e555d830425e1feba77a2929f901b891dde741af4b075f13ddf91869897		 pdf-font-stream PDF embedded font (sfnt) at offset 0x833D 10596 bytes

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