Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e4b52572c5835e2…

MALICIOUS

PDF

114.1 KB Created: 2020-08-23 05:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe138e4fe032beca6d2d59997fef6ce6 SHA-1: b2c874af1a7f0e0e3a7f776babccea4c027a1ff2 SHA-256: 8e4b52572c5835e23b098adc822c5aa762c6f26bedd6b87452e4e812fcb224cd
120 Risk Score

Malware Insights

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

The PDF contains a heuristic indicating it links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=fetal+development+timeline+worksheet'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0440/5490/4997/files/bet_equation.pdf' being the first identified. The document body, though heavily obfuscated, contains text related to a 'Fetal development timeline worksheet', suggesting a social engineering lure.

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=fetal+development+timeline+worksheet
    • http://judoro.technologytransferinnovation.com/uploads/1/3/1/6/131606349/ec76f2858d.pdf
    • http://files.sandwichhistorical.org/uploads/1/3/1/4/131453984/bezopudifiv-kukanoros-vekager.pdf
    • https://cdn.shopify.com/s/files/1/0440/5490/4997/files/bet_equation.pdf
    • https://cdn.shopify.com/s/files/1/0464/5624/2344/files/susewujijufememewir.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/98594099987.pdf
    • https://cdn.shopify.com/s/files/1/0456/9900/6620/files/4liker_instagram_followers_app.pdf
    • https://cdn.shopify.com/s/files/1/0435/7318/2625/files/90435460870.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/42463911413.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0086/files/bharathiar_university_pg_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/fybsc_botany_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/43374992419.pdf
    • https://cdn.shopify.com/s/files/1/0441/2493/0200/files/revit_architecture_projects.pdf
    • https://cdn.shopify.com/s/files/1/0427/4552/8487/files/36967642602.pdf
    • https://cdn.shopify.com/s/files/1/0438/3421/2509/files/62316845617.pdf
    • https://cdn.shopify.com/s/files/1/0433/8191/5802/files/9284941788.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.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_off00018314.bin
e2d805cda23b28694d1131a667e84a1d2c4e2f83e95880aa5b9b73036b93f39b
pdf-font-stream PDF embedded font (sfnt) at offset 0x18314 5368 bytes
font_01_sfnt_off00019542.bin
aa169e96aace605e0f0951084344d84cac225b2ed5ee115a21d10dac75deedb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x19542 10984 bytes