Malicious PDF — malware analysis report

Static analysis result for SHA-256 29c0e6b9d74b4692…

MALICIOUS

PDF

38.9 KB Created: 2020-08-09 01:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 411396ed270ead18039b9c8ad1c4585d SHA-1: 8ba3585cf9f89a8e13a7d7eb7ae1f07d32fd143e SHA-256: 29c0e6b9d74b4692a15f24b512098566d449d3cecf3de920c218793df4c35d73
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=new+cutting+edge+pre+intermediate+students+book+pdf`. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, a heuristic for a PDF link farm was triggered, with numerous external links embedded within the document, many pointing to Shopify domains. The document body text, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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=new+cutting+edge+pre+intermediate+students+book+pdf
    • http://jakemi.gloucestervet.com/uploads/1/3/2/3/132302782/3648bc0acd3f.pdf
    • http://files.magdalenamorataya.com/uploads/1/3/1/3/131381675/vesuboxumesej.pdf
    • http://files.kmaysphotography.com/uploads/1/3/1/8/131855992/412def98d78.pdf
    • http://files.donshort-artscaper.com/uploads/1/3/2/8/132814306/fosurexufavani.pdf
    • http://files.kincheloecam.com/uploads/1/3/1/3/131398091/wegelerosenelek.pdf
    • https://cdn.shopify.com/s/files/1/0432/2145/0914/files/37959893219.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1297022614.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/6620368202.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6306/files/foniwugiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/sites_that_use_http.pdf
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/30930429882.pdf
    • https://cdn.shopify.com/s/files/1/0445/8453/4180/files/graco_3_in_1_car_seat_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7776/files/75912908335.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/36691103155.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/tezefugajozidepemigukowe.pdf
    • https://cdn.shopify.com/s/files/1/0435/7160/9761/files/tusisexoguvumaxe.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_off00005a4b.bin
4ba62d3b12c689a83bff1c1341f4d420807db3453119d8d46c763250345aaee8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4B 5708 bytes
font_01_sfnt_off00006db4.bin
3111fb5cd01432fa616ca7c70240700eff8347d7d6fadb3fdb7672dedd6b4630
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB4 9588 bytes