Malicious PDF — malware analysis report

Static analysis result for SHA-256 86a1ffcf4a2a43bf…

MALICIOUS

PDF

63.0 KB Created: 2020-08-07 12:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a0eafd8bcc2a51ec02aaf9e8cc0a67d SHA-1: 7d49665795a9e2033091981591ed2f99e302f609 SHA-256: 86a1ffcf4a2a43bfb6dba42df63485c7c11c4153bb9fe76ee114d5c4cc72126d
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'Canon 5d mk iii manual pdf'. This URL redirects to 'ttraff.com', which is flagged as malicious. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed for SEO manipulation to distribute 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=canon+5d+mk+iii+manual+pdf
    • http://files.antiaginguniversity.net/uploads/1/3/0/8/130874119/pukemefimodi-fepuka.pdf
    • http://files.katialubchenko.com/uploads/1/3/1/6/131606674/4148436.pdf
    • http://nisogu.panagiotisandreoglou.com/uploads/1/3/1/8/131872225/xujupin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62856854762.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/nijimowezugotijuzaxuwiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/terikux.pdf
    • https://cdn.shopify.com/s/files/1/0434/1687/9271/files/ftb_legacy_launcher_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowelikuzamutaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/9117/9160/files/voltaire_candide_ou_l_optimisme.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/suxajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8144/1181/files/cursive_alphabet_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/7976/1061/files/3017337144.pdf
    • https://cdn.shopify.com/s/files/1/0439/8910/6846/files/lumozetofunejukubuvuvinik.pdf
    • https://cdn.shopify.com/s/files/1/0432/0614/8255/files/56122638574.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/zonuforanotevagajibisatef.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/
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/zonuforanotevagajibisatef.p

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aa5a.bin
f7ada6b8c439494082ee4de88298ccf6ce3c1f67dd3ffaee9b46f137e74d2a0f
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA5A 5004 bytes
font_01_sfnt_off0000bb5d.bin
e806517e95518db9a34975ae8d52eed83bc74264ae2e2a64877973dfd63d3756
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB5D 15916 bytes