Malicious PDF — malware analysis report

Static analysis result for SHA-256 366d0742b661eb33…

MALICIOUS

PDF

42.9 KB Created: 2020-08-05 00:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f12acbc0558c6b4f1be529e729f759f SHA-1: d856bb0cca2fbc9dc26612a3450f986404a64c5d SHA-256: 366d0742b661eb3390be4535dc77c493b18b7d18abef3327505d643a22577e89
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, contains text related to 'diagnostic tests for hiv pdf' and the malicious URL itself, suggesting a lure to a phishing or malware distribution site. The presence of numerous PDF links, many hosted on Shopify, indicates an attempt to create a link farm for SEO poisoning or to obscure the final malicious destination.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=diagnostic+tests+for+hiv+pdf
    • http://files.musicfromthewestcoast.com/uploads/1/3/1/1/131164474/64c2ea2c8e.pdf
    • http://files.auroraonfrance.com/uploads/1/3/2/7/132712185/fogafip-kodiv-jolafurexiba-naguresoginiw.pdf
    • http://files.hardertack.com/uploads/1/3/2/3/132303286/8f2109b6c6.pdf
    • http://files.orleanscountyfair.net/uploads/1/3/2/6/132682564/785386389e0.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/4762561614.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/bivujisojusuvejotuxor.pdf
    • https://cdn.shopify.com/s/files/1/0433/7867/1779/files/36197873785.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4846/files/honda_trail_70_parts.pdf
    • https://cdn.shopify.com/s/files/1/0430/0154/4863/files/39471817951.pdf
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/14537819551.pdf
    • https://cdn.shopify.com/s/files/1/0435/6915/2159/files/39420408662.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0302/files/nizadejinunazuvox.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/79776150519.pdf
    • https://cdn.shopify.com/s/files/1/0434/2733/2252/files/95247423076.pdf
    • https://cdn.shopify.com/s/files/1/0435/9821/7378/files/30485597095.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_off00006a7d.bin
01362edb417e2c764e58a62f9075f1184a137b17ff736358a7bd62968a3ddf96
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7D 5444 bytes
font_01_sfnt_off00007d11.bin
e0df6adc9a8a2922bab1cbff0a47828e7977647d4c180186267b2f6ac6f2db8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D11 9976 bytes