Malicious PDF — malware analysis report

Static analysis result for SHA-256 60241efb29af750f…

MALICIOUS

PDF

46.0 KB Created: 2020-07-27 08:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8d3bba4f46aa066dfe0b2d99ce17872 SHA-1: 63fea956bf45e38feccbc76a0ee88ec47f0cb368 SHA-256: 60241efb29af750faddaa6c8837b5ea989437a2ad0801ebbeb3b4f164e1232b5
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This URL is likely used to funnel victims to malicious sites. The PDF also contains a link farm heuristic, indicating an attempt to generate traffic or SEO manipulation. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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/pify?keyword=empyrean+energy+plc+annual+report
    • http://files.tuscanpta.org/uploads/1/3/1/1/131164473/670539.pdf
    • http://files.commercial-doors.co.uk/uploads/1/3/0/9/130969971/jevovutel.pdf
    • http://files.creeksportsshop.com/uploads/1/3/2/7/132712206/vovune.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lebalod.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/40899867651.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/lefabosafas.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/vijeloxexarupofuro.pdf
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/dudomapizuvolira.pdf
    • https://cdn.shopify.com/s/files/1/0437/3102/6071/files/fupavupifogowuzaruv.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0841/files/winez.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/12816351587.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/tepezesul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38140624907.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/34671951856.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9203/files/8652111378.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_off000076e0.bin
1287920257df97f61393987c474a0e989b6ff20f0f6588414cdd288fa9a3b33c
pdf-font-stream PDF embedded font (sfnt) at offset 0x76E0 4968 bytes
font_01_sfnt_off000087b6.bin
1ba1df3ceac254dc827e8212893fe12a44357eead93f4f0b53c77706b4c7e533
pdf-font-stream PDF embedded font (sfnt) at offset 0x87B6 10400 bytes