Malicious PDF — malware analysis report

Static analysis result for SHA-256 15804a4de5e4c47a…

MALICIOUS

PDF

44.8 KB Created: 2020-09-01 11:52:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6409df95c2d6957dae248073274fd9b SHA-1: 50754ec8bfadf1a7fe3cd13b0c1022a2bc22b5db SHA-256: 15804a4de5e4c47a190cfbb9e0f12ac78e0f679b4cfc05aa61bc14c926fc327e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious content. The document body, though heavily obfuscated, contains keywords related to 'iphone 11 icloud photos' and the malicious URL, suggesting a phishing or scam lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to distribute malicious content.

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.cc/wix?keyword=iphone+11+icloud+photos+not+ing
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/c5d40f_094bee1213ef4c45a67cc43ad7bba501.pdf
    • https://static.usrfiles.com/ugd/429b25_2c613a46dc66481598d1223d9243b117.pdf
    • https://static.usrfiles.com/ugd/b7082a_8f095eed1e104c47be40a0294e9885c0.pdf
    • https://static.usrfiles.com/ugd/8de238_404469c241ff4e10a47959b1c0ae182a.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/sony_4k_android_tv_55_inch.pdf
    • https://cdn.shopify.com/s/files/1/0429/4161/2199/files/92300866179.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/18466533127.pdf
    • https://cdn.shopify.com/s/files/1/0429/1677/4054/files/lebot.pdf
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/tilivoni.pdf
    • https://cdn.shopify.com/s/files/1/0431/0718/8898/files/sintomas_de_retinopatia_diabetica.pdf
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/64112149303.pdf
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/vafatireloraseburimorox.pdf
    • https://cdn.shopify.com/s/files/1/0462/8119/5680/files/burebu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2734/9159/files/nekofozifegunaxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3445/files/66016077251.pdf
    • https://cdn.shopify.com/s/files/1/0432/5366/1851/files/94898083306.pdf
    • https://cdn.shopify.com/s/files/1/0437/3010/8567/files/bozajefelagox.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7670/files/niwolijidulametaxi.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_off000072ab.bin
1f4b715a90433a77576c22cc99f4a56175e6f126866bb2683cee483f3f43522a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AB 5020 bytes
font_01_sfnt_off000083c6.bin
21ef6b691f550d3bdc9989cbe60ea7c2688d776a70d2d9a51671ca9fdaf1f167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83C6 9956 bytes

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