Malicious PDF — malware analysis report

Static analysis result for SHA-256 de066dff5498f6a0…

MALICIOUS

PDF

51.0 KB Created: 2020-08-21 22:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5221c6ef5f4dad0b012c3472eb84f13a SHA-1: 553c664eb3bad7e729dd2c22242017f3cfa55c83 SHA-256: de066dff5498f6a002f3263da2587c98822e72d41691672108444b9a0d915d43
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO spam or to redirect users to malicious sites. One critical heuristic firing specifically flagged a link to a known malicious redirector at 'ttraff.ru'. While the document body contains garbled text, the presence of numerous links, including one pointing to a malicious redirector, strongly suggests an attack pattern focused on link manipulation and traffic redirection.

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=chocolate+day+whatsapp+video+status
    • http://bened.cosypossum.com.au/uploads/1/3/1/8/131871721/bomitujoxekeboki.pdf
    • https://cdn.shopify.com/s/files/1/0437/4849/1415/files/8861257077.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/7206292079.pdf
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/23907315940.pdf
    • https://cdn.shopify.com/s/files/1/0435/4159/4266/files/chogada_song_mp4_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/samonenajawunom.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/history_of_biomass_energy.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/19604956084.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/tax_amnesty_scheme_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/2224/5273/files/risk_assessment_methodologies.pdf
    • https://cdn.shopify.com/s/files/1/0432/8508/6364/files/kindergarten_worksheets_missing_letters.pdf
    • https://cdn.shopify.com/s/files/1/0438/4918/7493/files/35089479521.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d7b.bin
c4823024e26eec9d312808727f560983d24e252f7b434a3e77138823e0b150ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7B 5120 bytes
font_01_sfnt_off00006f12.bin
ff1ce8d73d9d8ede5fdcb4e540c222d615cc9c2ced22bb97f2d5072dffaf7b6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F12 14032 bytes
font_02_sfnt_off00009ad0.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD0 16204 bytes
font_03_sfnt_off0000affe.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFE 4324 bytes