Malicious PDF — malware analysis report

Static analysis result for SHA-256 34e93554bb6407a6…

MALICIOUS

PDF

42.6 KB Created: 2020-08-03 09:18:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 725f6626835236b7038823489a155d88 SHA-1: f62fd3cf4b969b2efb56d84e5bb71848acb58800 SHA-256: 34e93554bb6407a60592e68e856380f17e2ed6da67bdae4a055411b444b4386c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=blue+mountain+state+theme+song'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL and a reference to 'wkhtmltopdf', suggesting it was generated by a tool for creating PDF documents. The primary intent appears to be redirecting users to malicious infrastructure.

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.cc/pify?keyword=blue+mountain+state+theme+song
    • http://files.arabrams.com/uploads/1/3/1/4/131406659/afbc108fb0bd41.pdf
    • http://files.tntwfg.com/uploads/1/3/0/7/130776589/wakoj-bozurat-roxojevawawiwil-peguvojabo.pdf
    • http://files.rosielonsdalephotography.co.uk/uploads/1/3/1/4/131406149/fidisigipebazas.pdf
    • http://files.operationcatsnipky.org/uploads/1/3/1/4/131453684/5e55b6.pdf
    • http://files.bocodainc.com/uploads/1/3/0/7/130739225/bomududi-meviriginaju.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/3780759590.pdf
    • https://cdn.shopify.com/s/files/1/0438/2444/7638/files/xaratazanugaxilezapolagul.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/4592053086.pdf
    • https://cdn.shopify.com/s/files/1/0429/9223/8745/files/basketball_wives_la_season_6_episode_11.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5291/files/57669605290.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31670740491.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/guxusi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/75728118318.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/matisijezekuwefexut.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/vikaxivirizifojifepajed.pdf
    • https://cdn.shopify.com/s/files/1/0433/5557/0341/files/47578934994.pdf
    • https://cdn.shopify.com/s/files/1/0435/1629/7368/files/43593490403.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_off00005ec4.bin
d554c34535db312fd1ad977ce97b281e0776d9283bfa9ff31b76666ccf1e4457
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC4 5052 bytes
font_01_sfnt_off00006fd0.bin
367cf57b4dcb239543021197ffb02fb2cc62364302c2eb6ccf2381b1b9dd4bed
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD0 14832 bytes