Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be00efc98f2d790…

MALICIOUS

PDF

84.5 KB Created: 2020-08-25 00:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73e5d10c2081c10d2dc3482e202a4f31 SHA-1: 14d78f543babd7629de7fc8bf099d3a3eea95f9c SHA-256: 5be00efc98f2d79047527d60d23aefa542c0fce74d358c3d9b992cb041336fa9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic identifying it as a link farm pointing to a malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=community+law+manual+trees', suggesting a lure related to legal manuals. The presence of multiple Shopify-hosted PDF links, some marked as benign and others unknown, indicates a potential attempt to blend malicious content with legitimate-looking resources.

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=community+law+manual+trees
    • http://gewezemu.cprlifesupport.com/uploads/1/3/0/7/130738531/2389918.pdf
    • http://files.exoticconfessions.com/uploads/1/3/1/3/131384335/3863125.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5005/7373/files/batefawuposalafudajuxax.pdf
    • https://cdn.shopify.com/s/files/1/0438/8179/1643/files/traffic_incident_management_training_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/43797175332.pdf
    • https://cdn.shopify.com/s/files/1/0433/9721/8471/files/steven_crowder_owen_benjamin.pdf
    • https://cdn.shopify.com/s/files/1/0440/1453/4806/files/cg_police_exam_date_2018.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/vocaloid_miku_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8707/files/network_monitoring_tools.pdf
    • https://cdn.shopify.com/s/files/1/0435/3160/0031/files/kawasaki_owner_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/92359096705.pdf
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/solving_equations_word_problems_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/7705/6165/files/55090399786.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/positive_r_words.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_off00011174.bin
a3231588d3980d825967ed06a5a52f9431186072e1851d1f3403915c69904da5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11174 4932 bytes
font_01_sfnt_off00012235.bin
f5304f558cbd147aba45362dee58b45c5d3a85a6fdea70971aa7df7664ed722f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12235 10188 bytes

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