Malicious PDF — malware analysis report

Static analysis result for SHA-256 453eadd9b3fceebb…

MALICIOUS

PDF

65.7 KB Created: 2020-08-11 21:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 887c316d9e702f85bda9a7c77f80d1e6 SHA-1: 55a8e084ca9aa2f3b2362b6cb6b1c46a2abe6cc0 SHA-256: 453eadd9b3fceebb31158738ed1bdf21d698cc0630c6a9fbc455ececf90de155
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically flagging it as a malicious redirector. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=ancient+egyptian+religion+pdf'. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the intended destination for users interacting with the PDF. The presence of numerous other links, many pointing to Shopify domains, indicates a link farm designed to obscure the true malicious destination.

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=ancient+egyptian+religion+pdf
    • http://zosotaze.dustyart.com/uploads/1/3/0/7/130775735/babexarigazep.pdf
    • http://files.upsandbrowns.com/uploads/1/3/2/7/132712661/baa464f3df76f.pdf
    • http://files.arttherapypedalers.com/uploads/1/3/1/4/131452904/wunuw.pdf
    • http://files.bluffsplus.com/uploads/1/3/1/3/131380063/moxobijewiki-bevofuxu-pivoranukubiti-fewarorewikoju.pdf
    • http://files.nalinikrishnankutty.com/uploads/1/3/0/8/130874128/mewajuluxojuvafox.pdf
    • https://cdn.shopify.com/s/files/1/0435/6761/2063/files/14174822451.pdf
    • https://cdn.shopify.com/s/files/1/0435/4477/2759/files/napibigidogidagep.pdf
    • https://cdn.shopify.com/s/files/1/0450/4682/5110/files/4chan_aco_brap.pdf
    • https://cdn.shopify.com/s/files/1/0440/7967/7590/files/93801292381.pdf
    • https://cdn.shopify.com/s/files/1/0440/1099/5862/files/45674385469.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6645/files/25015131349.pdf
    • https://cdn.shopify.com/s/files/1/0430/7763/2161/files/84874008418.pdf
    • https://cdn.shopify.com/s/files/1/0439/7491/8302/files/xolukokufaminapevirezix.pdf
    • https://cdn.shopify.com/s/files/1/0434/8497/1173/files/arduino_based_mini_projects.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1624/files/numaderitunijemavamofol.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/18296910236.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/zikuwekudagefenenukuxewa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/97181880093.pdf
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/gemupukizivubaxal.pdf
    • https://cdn.shopify.com/s/files/1/0437/2856/8474/files/morphology_affixes.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/
    • https://cdn.shopify.com/s/files/1/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c428.bin
bebe1bfa3be0ddd6cb3ff2de6cfed969817e12165cd0e8b7c94f4ca1f258496d
pdf-font-stream PDF embedded font (sfnt) at offset 0xC428 5236 bytes
font_01_sfnt_off0000d606.bin
9fcff61b5262c7ad0d503798ded25145f0a09b8df6da5cf66975a6067f44db78
pdf-font-stream PDF embedded font (sfnt) at offset 0xD606 10420 bytes