Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a765280d225518b…

MALICIOUS

PDF

45.1 KB Created: 2020-08-29 15:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e610e23a8e56989cb07f63f93e0414a7 SHA-1: ae497bec12e1fe5e93f17ef119a05da4d90e440d SHA-256: 0a765280d225518b633b08af370a0a315bf59c9130fbf5540e72dd808511fd3f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector at 'https://ttraff.ru/wix?keyword=2005+jaguar+x-type+repair+manual'. The document body, though heavily obfuscated, appears to contain text related to a '2005 jaguar x-type repair manual', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or 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.ru/wix?keyword=2005+jaguar+x-type+repair+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/1814/1341/files/73769658888.pdf
    • https://cdn.shopify.com/s/files/1/0435/8848/5288/files/roblox_troll_script.pdf
    • https://cdn.shopify.com/s/files/1/0432/1394/7041/files/basic_guitar_learning_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/aadhaar_data_update_form_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5878/files/xonok.pdf
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/11532862428.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2967/files/mythic_nythendra_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/1997/files/alaska_highway_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/talukibusinira.pdf
    • https://static.usrfiles.com/ugd/b8c837_e44a31a6833b4e049bfd490e90321e3e.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe63f0c955074bdda56bd7d27368fb7b.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc54f51267794afc8cbdc6b3a2ef52f7.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/85373864390.pdf
    • https://cdn.shopify.com/s/files/1/0432/3144/5156/files/68622854437.pdf
    • https://cdn.shopify.com/s/files/1/0430/1773/2249/files/oxford_synonyms_and_antonyms_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/36315212629.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/international_journal_of_industrial_ergonomics.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063b0.bin
ff76f000dd18402b1082aeb054db10c678288c5353868b766778b3b21707716d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B0 5316 bytes
font_01_sfnt_off000075b7.bin
cc4ef08933324cf0ece1b9ed908295b98bd7fa9e6086dc70853ef7303aab61dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B7 10388 bytes
font_02_sfnt_off00009945.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9945 4324 bytes

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