Malicious PDF — malware analysis report

Static analysis result for SHA-256 44f4aa99447ea650…

MALICIOUS

PDF

41.7 KB Created: 2020-08-18 18:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90fc788bd7d63801d40cd6753a01b5b0 SHA-1: bafbba20cfe8af15eca75508dc4389f14a4f463d SHA-256: 44f4aa99447ea650b9ade2661bc8607625b654aca7fa871cee4b3cbb6a5ed993
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its structure containing a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=bts+bbmas+2019+performance+video', is flagged as a known malicious redirector. The document body contains garbled text but includes the same redirector URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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=bts+bbmas+2019+performance+video
    • http://powexa.abundancecreativearts.com/uploads/1/3/0/9/130969072/58a6840e3.pdf
    • http://files.whisperofspirit.com/uploads/1/3/1/4/131453555/wovaluwelidovit-fopajelomal.pdf
    • http://nulapeji.spartanleadershipgroup.com/uploads/1/3/1/0/131070851/12088daac3692.pdf
    • http://files.smkluver.com/uploads/1/3/2/8/132813998/8540258.pdf
    • http://files.santarosaneighborhoodcoalition.com/uploads/1/3/0/7/130775257/kiwog.pdf
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/povevegilatoruke.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/wuditakidewepawiwutubuji.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/dikitizogogipefel.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/nosode.pdf
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/bujomupiwizer.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/guias_de_medicina_ambulatorial_e_hospitalar_unifesp.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/94863263520.pdf
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/zuxoxigumuvuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/kabivesesaxirono.pdf
    • https://cdn.shopify.com/s/files/1/0439/8533/8526/files/werete.pdf
    • https://cdn.shopify.com/s/files/1/0448/3593/0273/files/84935228156.pdf
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/96910279445.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055ba.bin
85461fa6bcea803373cdb8bdc227885d9c0bbd900918283108803e499806c715
pdf-font-stream PDF embedded font (sfnt) at offset 0x55BA 5788 bytes
font_01_sfnt_off0000694e.bin
05bb8a3e2ebcb7915b8529b96e397a641559ec98325d36c6e138bfd25edac705
pdf-font-stream PDF embedded font (sfnt) at offset 0x694E 9900 bytes
font_02_sfnt_off00008b37.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B37 4324 bytes