Malicious PDF — malware analysis report

Static analysis result for SHA-256 8df084dd265af78e…

MALICIOUS

PDF

39.4 KB Created: 2020-08-09 09:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9faecf880d1c465dba2fbbeebdecd6c0 SHA-1: c7772b3c33b942af12729189c6bfe51e0cde6809 SHA-256: 8df084dd265af78e68a8d0f3cd2b8e3247c4b82e03d65a7ea0205ee725021c5e
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a loan scheme application, suggesting a phishing lure. The PDF also hosts a large number of external links, characteristic of a link farm, with the primary redirector being ttraff.ru.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=imran+khan+youth+loan+scheme+2020+application+form+pdf
    • http://files.moonhawkvisions.com/uploads/1/3/1/4/131437636/7970345.pdf
    • http://files.justaboutpetswc.ca/uploads/1/3/0/7/130775690/jobaxarivurerigusan.pdf
    • http://sigosufoj.newfilmmakersadventure.com/uploads/1/3/1/6/131607062/b0de47.pdf
    • https://cdn.shopify.com/s/files/1/0428/9947/2550/files/torrent_film_indirme.pdf
    • https://cdn.shopify.com/s/files/1/0435/1623/1840/files/rational_choice_theory_in_social_work.pdf
    • https://cdn.shopify.com/s/files/1/0437/2480/0151/files/11789000506.pdf
    • https://cdn.shopify.com/s/files/1/0432/4917/2635/files/xiwilegolodode.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/75947076653.pdf
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/1996_seadoo_gtx.pdf
    • https://cdn.shopify.com/s/files/1/0438/8706/7291/files/adverbial_clauses_exercises_advanced.pdf
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/sixorobowidufarip.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/27553047990.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/29707787208.pdf
    • https://cdn.shopify.com/s/files/1/0431/9179/5873/files/kisis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57308776079.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/45491543456.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_off00005a0a.bin
62bb06ddac2ff3d771719bf089f9155dff96978cf1043d8dbf8a0470f012f647		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0A 5772 bytes
font_01_sfnt_off00006d90.bin
366de4e0f82a4c004829224c69ac34d8b12cd0cdacbb9f4702aa685cd555717d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D90 10184 bytes

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