Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea189efce271299…

MALICIOUS

PDF

44.4 KB Created: 2020-08-31 19:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1dc04b305fdb09fe26f1e1a774beb6a7 SHA-1: 916fa3f28accaafde834e9654d7bba42665d3d1d SHA-256: fea189efce27129963b5406a9c197523d2dae2cf27c9199bce1aecdddb239a5b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a link to Destiny 2 game information. The PDF also contains a large number of embedded links, many pointing to Shopify, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the embedded links and heuristic firings indicate a phishing or redirection attempt.

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/wix?keyword=destiny+2+raid+guided+game+beta
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/cryptocurrency_trading_investing.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/kuxitujerit.pdf
    • https://cdn.shopify.com/s/files/1/0465/0467/3430/files/59849325948.pdf
    • https://static.usrfiles.com/ugd/2c608b_76829b68477146cb9d54c021c37671df.pdf
    • https://static.usrfiles.com/ugd/086daf_eb7c904b22474f25b3c3bf3b993c2b71.pdf
    • https://static.usrfiles.com/ugd/b8c837_de9313b406d64784937543534630954f.pdf
    • https://static.usrfiles.com/ugd/dc98cc_4cf760bbbf7b43c9b387ddde34029804.pdf
    • https://static.usrfiles.com/ugd/299074_2347c8dbc7eb4c3bbc90335ce23d765a.pdf
    • https://static.usrfiles.com/ugd/7ff653_f1ef21a72da243a59316528b196549f1.pdf
    • https://static.usrfiles.com/ugd/b5472a_3d2bce0d89b9457cae75b674bec19a89.pdf
    • https://cdn.shopify.com/s/files/1/0437/0048/6312/files/85944317817.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8646/files/63999763326.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/killers_human_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0450/4194/2678/files/windows_add_to_path.pdf
    • https://cdn.shopify.com/s/files/1/0428/3862/2375/files/51425270299.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000609b.bin
07450a781879dc351606c8c0aa913bacf42fd70b211ee0248c9378f7ab7e6151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x609B 5256 bytes
font_01_sfnt_off00007259.bin
a6ee66ae13034f8b768b006d6ca5a7b98c2bf1f2ea0ddf7fec25cd0d53f2075d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7259 10600 bytes
font_02_sfnt_off00009688.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9688 4324 bytes

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