Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bfd26e460208577…

MALICIOUS

PDF

45.3 KB Created: 2020-09-01 02:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee155c4284f0327f142781611af9f625 SHA-1: a52ba825396d284d64620da0bfd3a6a00bd00c8b SHA-256: 7bfd26e460208577308fd8c04ed63d136e476e7d743ac9ff3956212889745e77
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/wix?keyword=intruders+hide+and+seek+trophy+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text fragments and URLs that suggest a lure to external content. The presence of numerous external PDF links further indicates a link farm or redirection strategy, likely for phishing or malware delivery.

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=intruders+hide+and+seek+trophy+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/d4579c_461268fd02d4424a865c4eaa9c291890.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_9f3680fd1ef54147a62fb00f452aedf4.pdf
    • https://static.usrfiles.com/ugd/868401_8131c99656554f07b82f184962e7aac7.pdf
    • https://static.usrfiles.com/ugd/43d598_4c5fe65b7efa4360bfc3b4086d7b0c2a.pdf
    • https://static.usrfiles.com/ugd/ca300b_16bc3564e7584e15894aa6e5767bf1ba.pdf
    • https://static.usrfiles.com/ugd/ac72e0_0c536bba5fb7447f90b9a37f2fe6ba04.pdf
    • https://static.usrfiles.com/ugd/2ac701_6e1139e60ba04c669508f351ef698e5e.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/1885232177.pdf
    • https://cdn.shopify.com/s/files/1/0469/0486/9024/files/58185850427.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/96776390388.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/migunege.pdf
    • https://cdn.shopify.com/s/files/1/0438/3873/4496/files/62388269468.pdf
    • https://cdn.shopify.com/s/files/1/0436/2915/0368/files/63720410020.pdf
    • https://cdn.shopify.com/s/files/1/0460/3310/9156/files/cuento_macario_de_juan_rulfo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/12184767059.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/fibixema.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_off00007161.bin
69ff35d024e2cd1cf02a876160c750edf158d154a6437252aac9dafa5258ed06
pdf-font-stream PDF embedded font (sfnt) at offset 0x7161 5292 bytes
font_01_sfnt_off00008366.bin
6cbb9225d1536e5b72036be61ff9ea3ab35d7277b987f2b3a0fa2e0965a03f67
pdf-font-stream PDF embedded font (sfnt) at offset 0x8366 10920 bytes