Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b3a3b1f0f92606…

MALICIOUS

PDF

53.4 KB Created: 2020-09-04 05:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9a94824c963d88441e2f9e04a2a1d2f9 SHA-1: bdeb73e568b9960142d763627c563b727e13200e SHA-256: 32b3a3b1f0f92606d6bec4e2bed0a26705b06e37ba1d7274a4da6c969c4db68e
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.com, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains text related to movie songs and the malicious URL, suggesting a lure to attract clicks. The presence of numerous external PDF links, many pointing to benign content, indicates a link farm strategy, potentially for SEO poisoning or to obscure the malicious redirector among legitimate links.

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/wix?keyword=narasimha+reddy+movie+songs++naa+songs In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/9ef1ea_2535267c05c84b7c87f8d4bfe9409874.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1cc7e8_f1128540c15049e8bda2fceff3ce5302.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/57c819_964f11cb26394c268fad038d2a326577.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9cc572_ce78eb83a6a340ceb6f1cc5b7fbdfc86.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/82e28d_05861e1f18154575a252733108302ef2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c0518c_537865de201e453f8e217c16b9c0af96.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_301c36b947394c2687d7119b95287eb0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fusuzirosaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5177/7954/files/moulinex_home_bread_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1827/files/wosopubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8875/files/cardiorenal_syndrome_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7451/9194/files/metenuvuvimodixojex.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D21 5048 bytes
SHA-256: ca70a685e3ea702b56aa80437913ce5423d8443f3c934d2932d495388a8f2b96
font_01_sfnt_off00008e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E28 14324 bytes
SHA-256: ff5cee42c27765d7d584462eefd84eaac789803a0704ed66d5a02a8777b475af
font_02_sfnt_off0000bb27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB27 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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