Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b42c7f6affcca1…

MALICIOUS

PDF

49.1 KB Created: 2020-08-10 13:12:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fd5b16b4e3c788cbf8a39d3d3536a4a SHA-1: 1dbebc21f83f77835b51949585fb4c94880cd5b8 SHA-256: b3b42c7f6affcca11e137fc523198c35a28ad752ce8d25b7ef13611bcbe0efd4
120 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=michigan+state+football+schedule+2020+pdf'. This indicates the document's primary purpose is to lure the user into clicking this link, which likely leads to further malicious content or exploits. The document also contains a large number of embedded URLs, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic to increase visibility and click-through rates.

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=michigan+state+football+schedule+2020+pdf
    • http://files.thetinyjungle.com/uploads/1/3/1/4/131406288/mofukexaxuwep-sazob.pdf
    • http://files.videoartcarmenkordas.com/uploads/1/3/1/8/131857756/2687435.pdf
    • http://mupafen.tearneylab.org/uploads/1/3/1/6/131606289/zowuvuvomu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/architectural_design_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/9281/1681/files/puputebatelow.pdf
    • https://cdn.shopify.com/s/files/1/0437/4485/4165/files/temorokizezifowij.pdf
    • https://cdn.shopify.com/s/files/1/0438/4758/1856/files/21507187850.pdf
    • https://cdn.shopify.com/s/files/1/0428/5267/9836/files/pusunuzesalok.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/bsc_nursing_syllabus_kgmu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/75055638835.pdf
    • https://cdn.shopify.com/s/files/1/0433/8774/8519/files/ourrelease_org_bittorrent_plus_search.pdf
    • https://cdn.shopify.com/s/files/1/0440/5955/8053/files/41078442698.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/87138514676.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6818/files/61799091730.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_off000074f4.bin
82618061e66d520c48f1ec2553a687481f76ce5d085765b84e44c5cb14416992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F4 5740 bytes
font_01_sfnt_off0000887b.bin
30fc02b6b7965547e6c90cdffc6d9ef074d77765c896057b5919fd7f5fca68f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x887B 15016 bytes

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