Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dfc00b2ef44363a…

MALICIOUS

PDF

50.3 KB Created: 2020-08-17 05:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 825c2a9146a895fdd8e9b78e3c2e6110 SHA-1: 9b9d65f90afa8fb425c58ea84c2c6365b7d46112 SHA-256: 9dfc00b2ef44363a5633cc6e9c4dae6abf798b15a20a7c6a0f9089dc282b9789
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to external PDF files hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=engineering+drawing+sheet+name+plate', is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. No scripts were extracted, and the document body is heavily obfuscated.

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=engineering+drawing+sheet+name+plate
    • http://files.studioescargot.net/uploads/1/3/1/6/131607232/8763015.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/babudimojuxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/nigasukekatugivexok.pdf
    • https://cdn.shopify.com/s/files/1/0430/4896/0151/files/4899192848.pdf
    • https://cdn.shopify.com/s/files/1/0434/8719/9394/files/vonesa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2095/1450/files/supabolomavovurosulat.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/17554753939.pdf
    • https://cdn.shopify.com/s/files/1/0441/0982/4152/files/children_s_aid_society_toronto_reporting.pdf
    • https://cdn.shopify.com/s/files/1/0435/1390/5311/files/mowuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/4486/3133/files/ecocentric_and_anthropocentric_attitudes_toward_the_environment.pdf
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/70920386367.pdf
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/76231820738.pdf
    • https://cdn.shopify.com/s/files/1/0433/4977/0399/files/4_string_bass_guitar_chords_chart.pdf
    • https://cdn.shopify.com/s/files/1/0453/3600/2715/files/meteora_greece_tourist_information.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c68.bin
41f77f67eb4dc807fbbd37f205f828a46c75b4c7f0992e33dabc5b15f1f01e6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C68 5424 bytes
font_01_sfnt_off00007eb2.bin
58b4873d33ac9fffaf45ed1a2312b8eb5fadf3b067e77f8cfe9e87095f6a7717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB2 6068 bytes
font_02_sfnt_off00008e63.bin
ceb4fb51713cd23f8cc2e05ad3fc6b96d48691eb75e990d4b14239b7dc8f4e1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E63 14716 bytes

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