Malicious PDF — malware analysis report

Static analysis result for SHA-256 8660343ea20aa1d5…

MALICIOUS

PDF

50.5 KB Created: 2020-08-30 01:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1faebd401aaa92683267f9fd6dcaabcc SHA-1: 26ae897c49e809d8eeba3a2cea41b2a14c4e7d57 SHA-256: 8660343ea20aa1d5096de74029498384584cc019a8f2197779b8025775d4fd99
154 Risk Score

Malware Insights

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

The PDF contains embedded links and text that mimic an Apple service diagnostic tool, aiming to trick the user into clicking a malicious URL. The primary malicious URL identified is ttraff.com, which is flagged as a redirector. The document also contains a large number of links to Shopify-hosted PDFs, likely for SEO manipulation or to appear legitimate.

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=apple+service+diagnostics+3s162
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/negociacion_en_el_ambito_laboral.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9738/files/wedanulajalajol.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6140/files/tapamojusovefexatabigedu.pdf
    • https://static.usrfiles.com/ugd/b56239_3d1b541e8df54c459004d612514e0908.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_9176f8e7d0764636949168ba49193222.pdf
    • https://static.usrfiles.com/ugd/2813e2_ef99d5d6b9184c3ea443989506420d20.pdf
    • https://static.usrfiles.com/ugd/b8c837_12dbbae6700946b2bd35f5b8641ff41c.pdf
    • https://static.usrfiles.com/ugd/2b25b5_4057f11a3d204561a3fa31520ba5280b.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/kaspersky_activation_code.pdf
    • https://cdn.shopify.com/s/files/1/0432/9144/3364/files/pogil_9_ions_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/faxixe.pdf
    • https://cdn.shopify.com/s/files/1/0439/6256/4766/files/pagowuzaf.pdf
    • https://cdn.shopify.com/s/files/1/0464/9700/5720/files/53410326185.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006569.bin
49e8aa262b818fd7f9642f11530829c5458e9ab2da3e25a3c6b9a1a9fefc7be5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6569 5792 bytes
font_01_sfnt_off00007934.bin
040b80e2ce6410f8eb13d2e978ae43998b3ea143dc6faabfc28e4bacc5c015ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x7934 14240 bytes
font_02_sfnt_off0000a59a.bin
b85bf092052bbb56e07bc0c06d6b50555d9a8ed6a0eac199cb6633b4a113c520
pdf-font-stream PDF embedded font (sfnt) at offset 0xA59A 16568 bytes