Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb13ef844017dae4…

MALICIOUS

PDF

31.8 KB Created: 2020-08-20 22:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e34129d243073ecc7d2921b6787532c SHA-1: a2fe039b8dc107132b4e65da1b87b4b743a4ae87 SHA-256: cb13ef844017dae4de1f276d3077a80d17b9258add91aa6def4311256a8dcdd0
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search results, with the primary malicious link being a redirector. The document body text and embedded URLs suggest a lure related to 'New bhojpuri dance dj song'. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the primary URL leads to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, likely for SEO manipulation or to host further malicious content.

Heuristics 3

  • 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.
  • 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=new+bhojpuri+dance+dj+song
    • http://files.scotdancenz.co.nz/uploads/1/3/0/7/130738769/8399703.pdf
    • https://cdn.shopify.com/s/files/1/0437/5448/7957/files/animal_crossing_new_leaf_3ds_fish_guide.pdf
    • https://cdn.shopify.com/s/files/1/0450/7323/6131/files/agriculture_chapter_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0433/1477/4169/files/19271119716.pdf
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/fezopixuvikiximidi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6549/1107/files/paranudafowafojopajudate.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6477/files/borehole_drilling_process.pdf
    • https://cdn.shopify.com/s/files/1/0440/9724/1240/files/54205379981.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/zudinirexonazegetez.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_off00003ed8.bin
08b115eceb4d655a85312fac9016239ed74151f1150b41df982dd19790279fc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3ED8 5580 bytes
font_01_sfnt_off000051d7.bin
7ed5134fed075ea365552cd5ff017e4de09611980f2ca2b4a6d3c94516793f0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51D7 9796 bytes

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