Malicious PDF — malware analysis report

Static analysis result for SHA-256 6debe5b2ab811a23…

MALICIOUS

PDF

45.3 KB Created: 2020-08-22 14:17:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34e99552de85e87027f56dc047b94b82 SHA-1: 2f89ce9423f2a3d3d526737336c3ada723ff455e SHA-256: 6debe5b2ab811a235cb846dfe2fca86be176838fc4eb013435ff1068a73a014c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=boss+katana+50+mkii+manual', suggesting a lure to disguise malicious activity. The presence of a large number of external PDF links, many pointing to Shopify, indicates a link farm or SEO manipulation tactic, likely to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=boss+katana+50+mkii+manual
    • http://borumap.viana-motion.com/uploads/1/3/2/6/132683138/livupurikub.pdf
    • http://files.nicreconciling.org/uploads/1/3/1/8/131857920/zifawax_zemupepirezized_tukatoxijeda.pdf
    • http://files.naturallybalancedvet.com/uploads/1/3/2/6/132681062/genemisoteja.pdf
    • http://files.sweetbstoggs.com/uploads/1/3/0/7/130775025/43a6f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/4942/5823/files/life_cycle_of_ascaris_lumbricoides.pdf
    • https://cdn.shopify.com/s/files/1/0431/7301/9808/files/wiforosepabuno.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/ruxexizawumafevutabulax.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/mejatanora.pdf
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/wilivam.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6731/files/motedevamafatewirorozu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7994/2812/files/ableitung_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0431/1053/1233/files/47970959649.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1040/files/55974719342.pdf
    • https://cdn.shopify.com/s/files/1/0454/5983/2982/files/retojip.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8172/files/carrion_crown_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/6200/0806/files/688500525.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000737a.bin
9cf4320cd64c2787202e7646e535c5037513e2482ef48f4be114c6b45f393481		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737A 5112 bytes
font_01_sfnt_off000084d1.bin
59fcd4df3ce26a52a1ec5f73090c1e4684ef582ef64280d05bc01a62dde8d0cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84D1 10332 bytes

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