Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee66caf06509a90…

MALICIOUS

PDF

77.1 KB Created: 2020-07-31 14:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a75c4032c9fa867865e3c86812f607f SHA-1: 36aaea4ec282ccc230eeece2ef7352737f6b500f SHA-256: 8ee66caf06509a908b764e97222945cf872804eccfa40653366a9f53f6a35fe5
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify, likely to obscure the malicious destination. The document body, though heavily obfuscated, contains text related to 'Portrait drawing tutorial pdf', suggesting a lure to disguise the malicious intent.

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.com/pify?keyword=portrait+drawing+tutorial+pdf
    • http://files.starfireband.ca/uploads/1/3/1/4/131408250/ninaduwa-sizevilito-texokaf-lesalugobediv.pdf
    • http://files.riverviewcounselling.com/uploads/1/3/0/7/130738554/xinavu.pdf
    • http://files.secondnaturewv.com/uploads/1/3/0/7/130776812/135dc3db48cc7.pdf
    • https://cdn.shopify.com/s/files/1/0428/6388/6495/files/42757455640.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97697777452.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7855/files/logusos.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/botimawiwimosuzeruvuxes.pdf
    • https://cdn.shopify.com/s/files/1/0430/3241/2311/files/41541486183.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/soluwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75815848510.pdf
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/12974829463.pdf
    • https://cdn.shopify.com/s/files/1/0434/7926/9541/files/vuwuvumomezoxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0561/files/kotajomubuvanaxuriju.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/97577604633.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/sozopotesanatepagasuvum.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_off0000f36a.bin
54c78887662653e23898f2560361eb6b815b2ba6509206d41722877c6717f9ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF36A 4888 bytes
font_01_sfnt_off0001041e.bin
9a7fedc6bdfd54cf50e207d411522768bc362c4ba6c5d57eb6844838fd84992f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1041E 10212 bytes

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