Malicious PDF — malware analysis report

Static analysis result for SHA-256 319540e0b30ebe82…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 10:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 485f18ef26477b79506047e449526031 SHA-1: 009dae4a9213b25a055ede6e3c6b0971e505e709 SHA-256: 319540e0b30ebe8235d97eba61dd618318b74a9bb47a0d27f55daaab0cabd653
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that the document is designed to lure users to external sites. The primary malicious URL identified is https://ttraff.ru/pify?keyword=katuni+video+mp4.

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=katuni+video+mp4
    • http://totixaxek.advancedemergencytraining.com/uploads/1/3/2/6/132681351/5565843.pdf
    • http://mimoseb.indytimes.us/uploads/1/3/0/7/130738721/8823732.pdf
    • http://files.ithembafsc.org/uploads/1/3/0/9/130969435/metali-mexamezivomu-baxekasorezoto-raluwitisi.pdf
    • http://tizusi.thinknwonder.org/uploads/1/3/1/3/131380065/fidimepovidominoni.pdf
    • http://dufane.columsands.com/uploads/1/3/1/1/131163992/aa57e41b1a7ab.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/52357992940.pdf
    • https://cdn.shopify.com/s/files/1/0432/5628/3296/files/89198703822.pdf
    • https://cdn.shopify.com/s/files/1/0428/9924/3174/files/duwasuxafapilubadad.pdf
    • https://cdn.shopify.com/s/files/1/0437/3925/0853/files/tonipopagigogonuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/5066/2053/files/rock_slope_stability_analysis_giani.pdf
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/keruz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/juwulolotuda.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/xanuduzosivixavosisa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/zoviteren.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/rerovi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7525/3910/files/pukizutuxap.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_off00006481.bin
234b2c323fecf807a5dc83f695c35043b787080dd797ff3d4c3f202ec61daba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6481 4916 bytes
font_01_sfnt_off0000753d.bin
a9dc4d407bf1bb3d9a4da6361b7b0d47aecd1e7e126f4f5fb2fa3db28c9e4c5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x753D 10156 bytes

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