Malicious PDF — malware analysis report

Static analysis result for SHA-256 3059de095def6de1…

MALICIOUS

PDF

132.5 KB Created: 2020-08-31 09:15:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 511647bc0b064e0a8622d4a888046a80 SHA-1: e394e8136dff22a35671ff023ff1ff03c1369f4e SHA-256: 3059de095def6de1a7e728a999420a4ef4bdb869fab0123dde5c17468659148b
162 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 used to host SEO spam and potentially distribute malware. The document body, though heavily obfuscated, contains the URL and keywords related to a video game, suggesting a lure to entice clicks. The presence of numerous PDF links, many pointing to benign content, indicates a link farm strategy, likely to improve SEO for the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pokemon+blazed+glazed+mega+evolution In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/ef7b09_cf352ecac4f9406f9c5dd37280fcab59.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/73cb9e_a72e9f5ba2054c1089477f406f34e666.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c1108c_b49d5c3366f444db9bb5cfa06ba31786.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/05900a_776ff052847f48ba8d38736782589e6a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7253/4166/files/time_value_of_money_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/54369115447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3177/3852/files/sawuzaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4309/4677/files/getakuzuxukedasalite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/37061382529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/1027733329.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5360f8_c7fed92359604f12bcf11878a6f804a5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cc089a_e8f0671d189540a3bcc1eef4b9436ed8.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ca7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA7A 5184 bytes
SHA-256: 6e2256e4f753c75b2b467d1bb41ab29122b9762fb779d5507aa73fccb59a7a33
font_01_sfnt_off0001dc1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DC1F 11344 bytes
SHA-256: 626489d4b36c6194dec63caecd5904c85b98c23405df4dd95480603f9bf24459

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