Malicious PDF — malware analysis report

Static analysis result for SHA-256 6780afd0fe7def68…

MALICIOUS

PDF

32.4 KB Created: 2020-08-29 11:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07cc745eef78418f40cda7b94535bb74 SHA-1: 9105df1503d994d5748d28c92899e7bea0fc8352 SHA-256: 6780afd0fe7def68d68ff19caf857f1ec095102a565475ae933b99b6eea50fb3
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.cc, which is likely used to host or redirect to malicious content. The document body, though heavily obfuscated, contains the same URL and a keyword suggesting a lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a link farm strategy, likely for SEO manipulation or to distribute further malicious content.

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.cc/wix?keyword=isometrico+instalacion+sanitaria
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6826/8448/files/tuzugexitazujimavefuzam.pdf
    • https://cdn.shopify.com/s/files/1/0429/2503/1590/files/27010255255.pdf
    • https://cdn.shopify.com/s/files/1/0434/4699/3052/files/lord_of_the_flies_historical_context.pdf
    • https://cdn.shopify.com/s/files/1/0434/2693/9042/files/74041892985.pdf
    • https://static.usrfiles.com/ugd/b8c837_92d5d119bc1b45deaae62c4b49be2046.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba1c95c30cf7409fb381c6f1eafe6daf.pdf
    • https://static.usrfiles.com/ugd/b8c837_a84d15c123cb4e1bb50c51970a17423d.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0562/files/new_delhi_amritsar_shatabdi_departure_platform.pdf
    • https://cdn.shopify.com/s/files/1/0429/1565/9942/files/sejosiwamazejimaniwudari.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/70237692258.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/mamorumanadebid.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/wojaradoraj.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_off00004304.bin
22bf191ce0b936fab7bae05c979fa2ff2116290f0e02dcf4c3a7302c5dda349c
pdf-font-stream PDF embedded font (sfnt) at offset 0x4304 4884 bytes
font_01_sfnt_off0000537b.bin
394ee33d8de713901ada752d4c1793b0e11d5a34953751393a1d3e1ce306d393
pdf-font-stream PDF embedded font (sfnt) at offset 0x537B 9680 bytes