Malicious PDF — malware analysis report

Static analysis result for SHA-256 6821fca043b0aaed…

MALICIOUS

PDF

65.3 KB Created: 2020-08-17 05:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6384bf1aceeae030df92fc46cd351c04 SHA-1: c17fba786fdc186812f0c80e040bd53c06a29455 SHA-256: 6821fca043b0aaed631a76349e3421843f7ca700c5b7e27dee9deb2526090460
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=car+games+1+racing+game'. This suggests a phishing or scam attempt, likely using a lure related to car games to entice clicks. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=car+games+1+racing+game
    • http://files.brightstarlifestyle.co.za/uploads/1/3/1/6/131607662/wexesaw.pdf
    • http://files.peninsulaitalians.org/uploads/1/3/2/7/132740541/danesujopemi-dimotu-pifujum-zariwukezux.pdf
    • http://sebufodot.tyoshunbncompany.com/uploads/1/3/1/4/131407406/zibepagitovow-rapozebo-tositupusumage.pdf
    • http://files.thaiconsultingfirm.com/uploads/1/3/1/4/131454114/kapaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/0903/1840/files/bogefomudoripudo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdf
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/ravuwezefizixipugewega.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/juzotiro.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1518/files/9449704064.pdf
    • https://cdn.shopify.com/s/files/1/0435/6125/5073/files/potuneb.pdf
    • https://cdn.shopify.com/s/files/1/0448/5431/3122/files/types_of_occupational_diseases.pdf
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/makutolezadusesu.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_off0000b788.bin
81c2e491a0054f0f0a424f7b36c7998bb26aca2cff0011f619e3d9afe6069f97		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB788 4760 bytes
font_01_sfnt_off0000c795.bin
e96d9e86f6a61f8a844bce3cf20358628e212db14f95ebc04861dd42bb38c1d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC795 10192 bytes
font_02_sfnt_off0000ea63.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA63 4324 bytes

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