Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c002c98af21efa…

MALICIOUS

PDF

42.3 KB Created: 2020-08-04 14:23:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b330f8e65ac9550d3fb2d60b4a01715 SHA-1: 3078d20a812ce9c369de894d55904ca90f12b1bc SHA-256: f0c002c98af21efa5784781300e4c36f371ee15c876fbc1e0796ef68f814246c
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a link to a known malicious redirector at https://ttraff.ru/pify?keyword=icds+9+borrowing+cost+pdf. The document body, though heavily obfuscated, contains references to the same URL, suggesting a deliberate attempt to redirect the user to malicious infrastructure. The presence of numerous links, many hosted on Shopify, indicates a link farm designed to attract traffic.

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=icds+9+borrowing+cost+pdf
    • http://files.mazamo.co.uk/uploads/1/3/0/9/130969158/borebemobenil-fawuwajal.pdf
    • http://files.nsiclan.com/uploads/1/3/1/4/131454352/zopujul.pdf
    • http://files.aventuratherapist.com/uploads/1/3/1/8/131856158/xewugifa-gemadezuridode-xapaveneku.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/90536266142.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2728/files/2761968228.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/18597129599.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/sakis.pdf
    • https://cdn.shopify.com/s/files/1/0434/7235/5478/files/1010007696.pdf
    • https://cdn.shopify.com/s/files/1/0430/0747/5875/files/17756504415.pdf
    • https://cdn.shopify.com/s/files/1/0428/1047/4663/files/59400904777.pdf
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/65953984449.pdf
    • https://cdn.shopify.com/s/files/1/0428/4973/0727/files/15616868879.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/sulewupepazino.pdf
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/89041312225.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/epson_xp-_640_manual.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_off000067d9.bin
c81d64a5fc16c51798a99bc7361273d83f8356699bbb6b3d0ace57db1c91148c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D9 5408 bytes
font_01_sfnt_off00007a58.bin
6f1624525e16fa2ff1f677fd563f1f21bf544764a4f0b5e7cb3c5787cba89968		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A58 9908 bytes

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