Malicious PDF — malware analysis report

Static analysis result for SHA-256 393d84b13f16ccf2…

MALICIOUS

PDF

43.4 KB Created: 2020-08-08 15:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f80522360b3bfd4fbd185aca2077482 SHA-1: 3bd83f17c690be8fa268e1dc8b9344e9d4f4f567 SHA-256: 393d84b13f16ccf28a130b853086d5f2bfbf170d71473c5cc5089c253c73da6f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=geometry+according+to+sulba+sutra+pdf`. Additionally, it exhibits a PDF link farm, with many links pointing to `cdn.shopify.com` and other domains, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The embedded URLs are the primary indicators of malicious activity.

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=geometry+according+to+sulba+sutra+pdf
    • http://files.kymchessall.ca/uploads/1/3/1/6/131636957/9537833.pdf
    • http://files.communitymidwivesofbrantford.ca/uploads/1/3/1/4/131453194/nafasasolomev.pdf
    • http://files.lukascrafts-innosense.com/uploads/1/3/2/6/132696029/pawunugixigamiriku.pdf
    • http://files.mihaistahiephotography.com/uploads/1/3/2/8/132814097/bobivesukajim-vizejipenux-kumesexuwuz-dilaf.pdf
    • http://files.danburyeducationfoundation.org/uploads/1/3/2/7/132740204/1206072.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nanejixiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/86235513575.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/maksud_surah_al_mulk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84602765162.pdf
    • https://cdn.shopify.com/s/files/1/0432/2548/1379/files/applications_of_biotechnology_in_medicine.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4487/files/mathematics_grade_10_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/cracker_barrel_menu_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/puledofeposopek.pdf
    • https://cdn.shopify.com/s/files/1/0431/2157/4044/files/xodukixaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/91362714263.pdf
    • https://cdn.shopify.com/s/files/1/0434/9086/9410/files/1360656335.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/41217595883.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_off000068da.bin
2988839b4581ba08ea53503b0462f3206f70dbd8a2f5792b82b30d6531b922a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x68DA 5748 bytes
font_01_sfnt_off00007c5c.bin
6c70f0eeed2d52c3dcdc1dc4e4c6f89f0c254cd807501c66caf485c6db0547cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5C 10640 bytes