Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2fd74cd45170e8…

MALICIOUS

PDF

33.6 KB Created: 2020-08-30 19:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7ba810d3b01f35dfa9894d4e41bf3b4 SHA-1: b41e606b7cefbd082aa5446e4c99772dc4372c7f SHA-256: ce2fd74cd45170e8a1de7051601e2dcd376442e314eab37d38c779c7031f914b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL, along with a large number of other URLs hosted on 'cdn.shopify.com', suggesting a link farm or SEO poisoning tactic. The primary malicious link is designed to lure the user to a site that likely hosts further malicious content or exploits.

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=pathfinder+adventurer%2527s+armory+2+pdf
    • https://cdn.shopify.com/s/files/1/0428/8741/3923/files/sasalerisugekuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7008/7587/files/busotowusapopudavulewit.pdf
    • https://cdn.shopify.com/s/files/1/0434/2192/5525/files/zolawepes.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/29456704338.pdf
    • https://cdn.shopify.com/s/files/1/0432/0493/5835/files/politically_incorrect_guide_to_communism.pdf
    • https://cdn.shopify.com/s/files/1/0435/5401/3336/files/59059223693.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/razuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/39906854271.pdf
    • https://static.usrfiles.com/ugd/3aca14_54703d49c4a8405aa09c0dd4c6ba7eb4.pdf
    • https://static.usrfiles.com/ugd/f80014_5f46b2141df8472dba145c33af5f6314.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e02d159814f48ccad7b6ad8e4ef7be0.pdf
    • https://static.usrfiles.com/ugd/b8c837_88218eff24bf439d88857ad7bd5bbd51.pdf
    • https://static.usrfiles.com/ugd/b8c837_d61ba79a6a1a48f8bd1b5ee58c55047a.pdf
    • https://static.usrfiles.com/ugd/b8c837_43deaa3efff0478aaac26c00240fc6a9.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004679.bin
96b6af8e16d2b19805f06d9e0e1929dc1b1f426ef1c87fe85653e56419fc5240
pdf-font-stream PDF embedded font (sfnt) at offset 0x4679 5580 bytes
font_01_sfnt_off00005959.bin
1de84cb8fe17bc2d56443732bab9950d65a0db992d137a82c23154bbfbcaac75
pdf-font-stream PDF embedded font (sfnt) at offset 0x5959 9416 bytes