Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a8295425e838119…

MALICIOUS

PDF

39.9 KB Created: 2020-08-24 02:54:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 302daabedfc5278343374d75e9c9a5ac SHA-1: 3dfb7bea33dfa75bb606fc524b269d6da9d17717 SHA-256: 7a8295425e838119bab5360ae0d62185b1becf75ea8a7f5086bda75f9ca93afb
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a cricket score sheet template. The document also features a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to improve search engine ranking for the malicious link. No scripts were extracted, but the presence of a malicious redirector and link farm indicates a phishing or scam attempt.

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/pify?keyword=cricket+score+sheet+template+word
    • http://files.pariswritersretreat.com/uploads/1/3/0/8/130873872/vikibofew_sopakexal_tapikugusakugid_dezonal.pdf
    • http://files.thefamilyfunband.com/uploads/1/3/1/4/131408172/9705188.pdf
    • http://vinap.raychenclay.com/uploads/1/3/0/8/130874049/4485700.pdf
    • http://falade.eibenteaching.com/uploads/1/3/2/6/132682974/dujakubatir-rawemeso-sawula.pdf
    • http://files.nomad-mercantile.com/uploads/1/3/1/4/131437513/sudapugevonu_gigef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/86080531151.pdf
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/24930453809.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6053/files/nonixomigusujuzasipamotas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/judegesuzopo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7181/files/blockchain_for_dummies_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/order_hall_champions_7._2.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/nodadatulizerab.pdf
    • https://cdn.shopify.com/s/files/1/0451/1947/1781/files/buffering_capacity_of_soil.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/48515326470.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/visotojusu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2577/6288/files/jixenuv.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_off00005f63.bin
067c2482a3bf124cb0c5677f9807b06b78d7cb9e43851c58d9cae7c6ee37b4a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F63 5376 bytes
font_01_sfnt_off00007188.bin
215c265a3929e949bbb436e46c8b1365cc91aaa1afa84272227ddf4c1e74c9b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7188 9764 bytes

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