Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb9377384af82ada…

MALICIOUS

PDF

41.1 KB Created: 2020-08-01 15:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acc634fc63744956c57d4813c23e8b17 SHA-1: b88f26ef4e5a40acec828ae12dff820aa4863075 SHA-256: bb9377384af82ada37859c0845271a858511154109accb644d7c95238438d206
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector at `https://ttraff.com/pify?keyword=bbg+workout+plan+pdf`. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier strongly supports this assessment.

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.com/pify?keyword=bbg+workout+plan+pdf
    • http://files.snowypeakswinery.com/uploads/1/3/0/8/130814340/7768402bbcc.pdf
    • http://files.maisonfranc.com/uploads/1/3/0/8/130814644/vesavuxoti-mitaravigimok-xedirof.pdf
    • http://files.crookedmilecheese.com/uploads/1/3/1/8/131871477/jadegipozavametezaso.pdf
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/90654437741.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/52785440428.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/84937106210.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/lexaxudage.pdf
    • https://cdn.shopify.com/s/files/1/0431/6849/7823/files/95500082271.pdf
    • https://cdn.shopify.com/s/files/1/0440/4438/6454/files/85640998924.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/beleb.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/bebavigazefuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9055/8622/files/77810037291.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/76455867455.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/mazorubakezusifuwevami.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/87744750388.pdf
    • https://cdn.shopify.com/s/files/1/0437/0890/7688/files/16606591710.pdf
    • https://cdn.shopify.com/s/files/1/0429/6248/5407/files/taxupudoxupo.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_off00006269.bin
db8e3fcbd88afdca46ba322837696faaf5baa3f5ddaafee4260123e19d43ad4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6269 5376 bytes
font_01_sfnt_off000074d8.bin
8161348047846fdcfc6615c0fc4016e242390df822b1c6125ac08214c3707e8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D8 10176 bytes

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