Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e4960d074d1ba1…

MALICIOUS

PDF

49.9 KB Created: 2020-09-07 20:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6a02353e14f7fa0f3d26057d0508881 SHA-1: 5c3cfef7e91f8470f980312ea83c920d72c0475e SHA-256: 68e4960d074d1ba10cd3471b0e9efa1946fa74de9be7939760842dde749129a3
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/wix?keyword=genetics+and+evolution+neet+pdf', which is flagged as malicious. The presence of many external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing 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.link/wix?keyword=genetics+and+evolution+neet+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/39202291310.pdf
    • https://cdn.shopify.com/s/files/1/0430/4538/8442/files/jutekewofus.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/78354156928.pdf
    • https://cdn.shopify.com/s/files/1/0435/6918/4931/files/51647688713.pdf
    • https://cdn.shopify.com/s/files/1/0462/5586/6010/files/geometric_series_problems_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/1874/0134/files/fight_cancer_with_a_ketogenic_diet.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/bsc_physics_1st_year_books.pdf
    • https://static.usrfiles.com/ugd/4fea5c_f408c08e31bf4e328f03eb1335061c14.pdf
    • https://static.usrfiles.com/ugd/9421c8_5363f383d2e64108abc266cd566d8fdb.pdf
    • https://cdn.shopify.com/s/files/1/0440/9743/7848/files/76308001711.pdf
    • https://cdn.shopify.com/s/files/1/0429/1218/6531/files/kudapenofigak.pdf
    • https://cdn.shopify.com/s/files/1/0451/9487/0935/files/types_of_centrifugation_techniques.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000596c.bin
4f8f66ead79b039ca09a6ea621d1d976454d8c07ac92e743203658bdfebbbb75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x596C 5024 bytes
font_01_sfnt_off00006aa4.bin
f4682beb9b648cc8d829a0513f946fbf135accaf135539a74288aa8700e9dca8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA4 14728 bytes
font_02_sfnt_off00009819.bin
1a51fac5cecc05d5f0a5d3b698ffe240ccab470cdba6a823ba27c6c2a12c20dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9819 16060 bytes
font_03_sfnt_off0000acaf.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACAF 4324 bytes

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