Malicious PDF — malware analysis report

Static analysis result for SHA-256 f105a84aa146650b…

MALICIOUS

PDF

38.5 KB Created: 2020-08-13 01:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af86ab0c18eae0af725ecb5583a9695f SHA-1: 3c3a1e2b961ee871293ca233e2b9feed539cdc96 SHA-256: f105a84aa146650b498476dd2a21d7a6a4b5ffcb2bd1b8dcfe2356d333a32572
150 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to shopify domains, but one critical link redirects to a known malicious domain, ttraff.ru. The document body contains garbled text and a reference to 'A1244 datasheet pdf', suggesting a lure to trick users into clicking the malicious link. The primary malicious URL is https://ttraff.ru/pify?keyword=a1244+datasheet+pdf, which is likely used to redirect users to 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.ru/pify?keyword=a1244+datasheet+pdf
    • http://files.jojoamo.com/uploads/1/3/0/8/130874514/zugosadanejasu_japal_rokuxarukitum_gifevudate.pdf
    • http://files.straplesskneepadsandtools.com/uploads/1/3/0/8/130813639/rokamasulozokus.pdf
    • http://files.smarterbites.org/uploads/1/3/1/4/131453869/63b20a13.pdf
    • http://files.sacredhearttutorial.com/uploads/1/3/0/8/130873851/fapibixuril.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/darobitiwimibolesar.pdf
    • https://cdn.shopify.com/s/files/1/0429/1218/6531/files/bunupasitesajet.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/teleological_theory.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7674/files/tawiwirejekezapakuxara.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/32522305631.pdf
    • https://cdn.shopify.com/s/files/1/0435/6653/0728/files/gomaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/1112/6942/files/vuxejosiworerumokiruka.pdf
    • https://cdn.shopify.com/s/files/1/0437/8217/6917/files/rovumaretof.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/tiginut.pdf
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/gugipujedipagidisusun.pdf
    • https://cdn.shopify.com/s/files/1/0433/8801/0659/files/25678248787.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/sodijimulodixopal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.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_off0000581c.bin
2f41cfdf2e64175c77fcfe8c3b70a2d60889c6235c059c7080a0fd09cc72562e
pdf-font-stream PDF embedded font (sfnt) at offset 0x581C 5260 bytes
font_01_sfnt_off00006a07.bin
b3ed29aa091eec98d231b9c2ee707e9228b6a93c00cfb25b2bf9e7fe948ff7be
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A07 10340 bytes