Malicious PDF — malware analysis report

Static analysis result for SHA-256 69207c8eff723676…

MALICIOUS

PDF

66.0 KB Created: 2020-08-17 00:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad27528c07feffbc70876b576ee7cb47 SHA-1: fad87b8e9736df5484bb0bc20652cece568d811a SHA-256: 69207c8eff723676c69a38328542ec70a8a0e6c4fe2d57e0cc0a199507010b1a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=dixon+of+dock+green+sheet+music'. This URL is likely used to lure victims into a phishing or malware download site. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, suggesting an attempt to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

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=dixon+of+dock+green+sheet+music
    • http://files.kpcouncil.org/uploads/1/3/1/6/131606343/dopagomi-wuvagovudu-ramor.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/2359/6693/files/19491986521.pdf
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/61948836120.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/oceans_hillsong_united_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/vampire_academy_book_4.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8930/files/55657792831.pdf
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/sevabanixodagatigaketi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1955/1388/files/runalumip.pdf
    • https://cdn.shopify.com/s/files/1/0434/5636/4709/files/55921185463.pdf
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/26722821572.pdf
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/95357678142.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/91426917445.pdf
    • https://cdn.shopify.com/s/files/1/0433/5216/2462/files/logo_game_answers_categories_drinks_1.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_off0000ba67.bin
fd2c32bd0d041b21e0909eed52951a1641739c0d16d8f2d231b07a4aae8735fc
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA67 5324 bytes
font_01_sfnt_off0000cc69.bin
b06a98e97336ecef95f949709cbe41b327ec7170ca81489614d8e627deed4c9c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC69 14972 bytes