Malicious PDF — malware analysis report

Static analysis result for SHA-256 b122eaa21eda03f3…

MALICIOUS

PDF

45.5 KB Created: 2020-08-17 09:10:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63d3a98e20a7d4ab9fcda505edad2448 SHA-1: 3e87d677d908c2a235c1f8a022e9b47a2d3dfae9 SHA-256: b122eaa21eda03f3119d4d6fd37adf0c75915a4e802799c6e38436d1c824f377
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.com/pify?keyword=saki+saki+song+video++mp4`. The document body contains garbled text but includes the malicious URL and a benign-looking Shopify URL. 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.com/pify?keyword=saki+saki+song+video++mp4
    • http://files.hermosahistory.org/uploads/1/3/1/0/131071297/jedilef.pdf
    • http://files.emilyafox.co.uk/uploads/1/3/2/6/132682754/7806368.pdf
    • http://files.flippedoutscience.com/uploads/1/3/0/8/130874316/wamurisoxova-fumuzased-lajusanowudib.pdf
    • http://files.blcmorris.org/uploads/1/3/0/8/130815277/c32a228489354.pdf
    • http://files.kiwanisclubofpleasantgrove.org/uploads/1/3/0/9/130968933/moxiginej_motajujon_fezafogagel.pdf
    • https://cdn.shopify.com/s/files/1/0433/6762/8950/files/20358069151.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/vogajodubipiviwafimula.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/new_sepsis_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/72297226472.pdf
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/buzzer_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/60420241322.pdf
    • https://cdn.shopify.com/s/files/1/0432/8833/0396/files/24719304389.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/biomedical_scientist_interview_questions_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/89725078822.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuxojusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/at_t_peopletools.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_off00004b3e.bin
5299212b4f20411e1db55ba7deb6f801132271ebb38a8fd81c3bd30ff2ad6e0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B3E 5464 bytes
font_01_sfnt_off00005dcb.bin
a728b04b3838dafc45cd366459e2e2345579cfffd548f19f55da8f61c9486628
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCB 14212 bytes
font_02_sfnt_off000089a7.bin
e58e8e8d3617fa2f52d62469859eb662c26c1c1537dc21f5cc6f1aa71eaa6aed
pdf-font-stream PDF embedded font (sfnt) at offset 0x89A7 18776 bytes