Malicious PDF — malware analysis report

Static analysis result for SHA-256 988f652a4a241955…

MALICIOUS

PDF

53.5 KB Created: 2020-08-21 21:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1d91fc5c8f1590b29c0721d069411ae SHA-1: 386a2779085d6b54dc01e5cc53f28bde174fb1fa SHA-256: 988f652a4a241955576587e18539f3f92a28f18e57f6ed7cf13d1a160499d44d
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=bhojpuri+sohar+geet+song', is flagged as a malicious redirector. This suggests the document's purpose is to redirect users to malicious infrastructure through a deceptive link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bhojpuri+sohar+geet+song
    • http://files.adventmoravianbethlehem.org/uploads/1/3/1/4/131406945/08a9ff8.pdf
    • http://files.spotlightpac.org/uploads/1/3/2/7/132712661/vefilozeporejuwazi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/41966952512.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/4558674419.pdf
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/jenibugofowij.pdf
    • https://cdn.shopify.com/s/files/1/0431/2675/1389/files/kizobodapiso.pdf
    • https://cdn.shopify.com/s/files/1/0438/4024/1829/files/what_are_webhooks_in_discord.pdf
    • https://cdn.shopify.com/s/files/1/0435/8481/5263/files/agastya_samhita_sanskrit.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/audacity_2._3._1_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2448/1431/files/titufifitozosadejupevev.pdf
    • https://cdn.shopify.com/s/files/1/0437/3997/1738/files/82323842376.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/24019519345.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_off000085e3.bin
af62fd14d5ea4c78a1dae2b6088400eaaa733c58b5533eedd41c75083107d9cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85E3 5172 bytes
font_01_sfnt_off0000977d.bin
fe34b0f6c18edd60847d0d410cd27b9e4ab620844a85667b2edc6a3889540377		 pdf-font-stream PDF embedded font (sfnt) at offset 0x977D 15584 bytes

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