Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fcc38602ba9ad89…

MALICIOUS

PDF

46.3 KB Created: 2020-08-09 10:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 816df52befdaf6529753f7b0fd91ed90 SHA-1: 7f5fc90b0144fde083635f0300b4564cbfa8016a SHA-256: 2fcc38602ba9ad893104fcfd32c993d0d38954e915bb132921ec751dcf218322
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a document about 'yield curve theories'. The PDF also contains a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm abuse. The document body contains obfuscated text and the malicious URL, suggesting an attempt to trick users into clicking through to a potentially harmful site.

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=yield+curve+theories+pdf
    • http://files.valskountrycorral.com/uploads/1/3/0/8/130813531/soxubevosajapax-dupuna-vofoxepokibobi-nokedoled.pdf
    • http://files.amoryshelter.com/uploads/1/3/1/0/131070231/koduripidenofiro.pdf
    • http://files.kramerjewelers.com/uploads/1/3/1/3/131384789/diwejunopisis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5474/3200/files/certified_ethical_hacker_v8_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2151/6445/files/characteristics_of_language.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/information_technology_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/7668/0869/files/52666722000.pdf
    • https://cdn.shopify.com/s/files/1/0431/4936/1314/files/54271623491.pdf
    • https://cdn.shopify.com/s/files/1/0446/2844/3299/files/newmar_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/6961/8841/files/78298225078.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdf
    • https://cdn.shopify.com/s/files/1/0438/6720/9893/files/54561927873.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/1/0432/0677/0849/files/information_technology_i

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000707e.bin
7784aba1eeb2d508cc56fa4a87ff4bf89aef6aae2f10d72247288ae5cca3f7e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x707E 5052 bytes
font_01_sfnt_off000081b3.bin
d6eb9da2a4bb446ee84bf6a227cc727c67e70c61cbc59c8e9c2dc355f4372bd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81B3 13628 bytes

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