Malicious PDF — malware analysis report

Static analysis result for SHA-256 2beee334b027e251…

MALICIOUS

PDF

44.6 KB Created: 2020-08-25 15:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6b6a1e2760831506f40fb16ea6351d3 SHA-1: c93a50548eab08a08d6835ebab147830b988833f SHA-256: 2beee334b027e251bd28ac8c243eb12126c46ca6735f18f2b1552a02ed0411c3
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=independent+t+test+report. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links points to a delivery mechanism for further malicious content.

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=independent+t+test+report
    • http://fites.anzaborregopaleo.org/uploads/1/3/2/6/132695535/c2b79.pdf
    • http://fifog.lensflared.com/uploads/1/3/1/6/131606289/bonelofazis.pdf
    • http://kotib.demandinggenealogist.com/uploads/1/3/0/7/130775129/tedupa.pdf
    • http://files.advantagetennis.net/uploads/1/3/0/7/130740073/loxov_sokiwefubapoza_wadumu.pdf
    • http://nagowotim.thogen.com/uploads/1/3/0/7/130775778/1df8b.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/3385557932.pdf
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/microeconomics_and_behavior_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0441/1890/0888/files/23418042147.pdf
    • https://cdn.shopify.com/s/files/1/0434/5489/0149/files/zetokijovegizawajoru.pdf
    • https://cdn.shopify.com/s/files/1/0439/8202/8958/files/56374317823.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3062/files/best_in_slot_destruction_warlock.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vakijuxek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mitev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006540.bin
75a87e6811f4f6e75072e32b726b7e09e1444deb082c76d781b6aa868a062083		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6540 4388 bytes
font_01_sfnt_off0000741f.bin
4b468a080781b8e0922dfd390d79c433e919d3a492a63e289a3f933e8ac68c0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741F 10388 bytes
font_02_sfnt_off0000979d.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x979D 4324 bytes

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