Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0222f32382eff6…

MALICIOUS

PDF

45.8 KB Created: 2020-07-28 08:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d02ea45b2b93e9dfee3dc582ae933f19 SHA-1: 28529dccf64b1a25367bf73ba1a8fb82b051bdd3 SHA-256: 2f0222f32382eff6a294aa8ef8729034b4fe211263eb98c3494dc8d3e8869807
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc', which is designed to lead users to further malicious content. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains text related to 'Bt sports 1 tv guide', suggesting a lure.

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=bt+sports+1+tv+guide
    • http://files.platinumfragranceoils.com/uploads/1/3/0/7/130776264/6138910.pdf
    • http://files.brettwolff.com/uploads/1/3/1/1/131163512/mazafo-zejusevujafe-zojabilidevaxo.pdf
    • http://files.gchumsoc.org/uploads/1/3/0/7/130775747/f03d2fa.pdf
    • http://files.heroesofcolor.org/uploads/1/3/1/4/131483108/8196902.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/mosojikitofexo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/73228233030.pdf
    • https://cdn.shopify.com/s/files/1/0437/1477/3147/files/nadutumadilu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/7091345553.pdf
    • https://cdn.shopify.com/s/files/1/0436/7033/9737/files/nosirovebilatotit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/ragulapijoxazakewuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15750122344.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutim.pdf
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/tekufodoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/15260930103.pdf
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/wujadesesoresomed.pdf
    • https://cdn.shopify.com/s/files/1/0431/7996/6628/files/gezekeruvexagoze.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/
    • https://cdn.shopify.com/s

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c3b.bin
31ccc40d0459dacd9eb8174433f87b7ef4f9b5c9e7eb10e66b0d9d79e029fe46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3B 4820 bytes
font_01_sfnt_off00007cca.bin
e8108d4d5ab9e1a7187c0eb456121c7d20de44f618678b1f9f462a5f75d60d37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCA 14920 bytes

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