Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d64318d0b06df3…

MALICIOUS

PDF

50.2 KB Created: 2020-08-10 00:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a8a156f2c29bc3ddcc9f4bda75be75e SHA-1: ffa278ca7fbe33b4dac0dbb7da9155282f2d0f7f SHA-256: f3d64318d0b06df3efa1d535333e200e0bf0728dcf7fd13d8f105b5471b4b7ab
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body also contains the URL 'https://ttraff.ru/pify?keyword=java+apache+poi+docx+to+pdf', which is likely used to lure the user to a malicious site. Another heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content through numerous links, with 'https://cdn.shopify.com/s/files/1/0436/9691/4586/files/spatial_strategies_for_interior_design.pdf' being one of the identified links.

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=java+apache+poi+docx+to+pdf
    • http://files.loudlibertarian.com/uploads/1/3/0/7/130738771/jeguzid_zusifami_jasapanomaj.pdf
    • http://files.marandihostetter.com/uploads/1/3/2/8/132814272/42f1bf.pdf
    • http://rofezu.farmersandfamiliesforlivingston.com/uploads/1/3/1/4/131453698/puporabutarerake.pdf
    • http://files.spartanleadershipgroup.com/uploads/1/3/1/4/131409090/402bb98c2bc7f.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4586/files/spatial_strategies_for_interior_design.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/sunagifotevegitafijopowud.pdf
    • https://cdn.shopify.com/s/files/1/0434/0593/4757/files/sizutidutetir.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2894/files/kasisirirojusoza.pdf
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/46049986882.pdf
    • https://cdn.shopify.com/s/files/1/0439/8333/9678/files/accuracy_and_precision_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/5609/4615/files/dexexur.pdf
    • https://cdn.shopify.com/s/files/1/0437/9423/5553/files/85379741290.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/vivewa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8085/0335/files/surarogum.pdf
    • https://cdn.shopify.com/s/files/1/0438/4351/8629/files/kutuveteti.pdf
    • https://cdn.shopify.com/s/files/1/0432/3383/7219/files/vindhyachal_thermal_power_station.pdf
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/takexatawebuniwasenol.pdf
    • https://cdn.shopify.com/s/files/1/0431/6443/4589/files/75479573224.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_off00007c9e.bin
fb5595a6b04b6117416efead9847fdc5d3acae7799d45ed4ecb1f9c200925b31
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9E 5056 bytes
font_01_sfnt_off00008de6.bin
79c63b2c016c7b595aeb29323d5ae6e5c2c59301195b8b652a62731500920b99
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE6 14544 bytes