Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eb20f422ddae88b…

MALICIOUS

PDF

40.8 KB Created: 2020-08-14 16:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d766abb27b293ce35729722db9774b2 SHA-1: 4a9f7aad16fee796ca7c2baad029ca3111e99afd SHA-256: 4eb20f422ddae88b91c7206696b8f42e1e83431b84fd4a6a989b5e22abd5787b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm with 24 external links, many pointing to Shopify domains, but one critical link redirects through ttraff.cc. This redirector is associated with malicious activity. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=gmail+create+folder+android', indicating a likely phishing or malware lure. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=gmail+create+folder+android
    • http://files.safna.com/uploads/1/3/0/7/130739028/xajat.pdf
    • http://files.spalarae.com/uploads/1/3/1/6/131606046/9441759.pdf
    • https://cdn.shopify.com/s/files/1/0434/6668/6617/files/pilopuwovizemofogigovido.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/computer_programming_books_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/72465560445.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/noakhali_vs_barisal_natok.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/jexozi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0334/6078/files/wukovujofivanij.pdf
    • https://cdn.shopify.com/s/files/1/0432/3750/7240/files/41572997872.pdf
    • https://cdn.shopify.com/s/files/1/0434/8539/7152/files/electronic_transmission_control_system.pdf
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/rowaxegajuloguv.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/93809845244.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_off00006279.bin
c1468cafd8d2fd92294413217572bd156968410e92a68ff0312e57c33b651607		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6279 5020 bytes
font_01_sfnt_off0000736e.bin
6832b44c0c73c60ad9d4cf8a050b8d4976653e5c67c762def781e8fdff9fbec8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736E 10364 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.