Malicious PDF — malware analysis report

Static analysis result for SHA-256 296556b5646b4384…

MALICIOUS

PDF

39.5 KB Created: 2020-08-04 17:19:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b44bf89ceb1e658f0d816190b3808a0a SHA-1: 659e798ac0f49f283f08cb2f439a83ed48dd46a5 SHA-256: 296556b5646b4384c6e45027cf4c682eb17f86135613505a2759904860a143ed
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it features a PDF link farm, with many links pointing to benign Shopify domains but one specific malicious redirector. The document body text and a low-severity heuristic suggest a 'download button' lure, reinforcing the malicious link's purpose. The primary malicious IOC is the ttraff.com redirector URL.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=print+pdf+book+staples
    • http://files.friendsofthemacgallery.com/uploads/1/3/2/3/132303310/2719478.pdf
    • http://files.ellistrations.net/uploads/1/3/0/8/130813837/93269c6cf63b26.pdf
    • http://files.eastwesttherapeuticarts.com/uploads/1/3/0/7/130776852/142440.pdf
    • http://files.bulldogexotics.com/uploads/1/3/0/8/130874075/pemaroluxipiner-puzituna-lusakusis-guwipisum.pdf
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/luropupa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2385/7824/files/12188204533.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/kebivaxubarunajekevakov.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0734/files/94035047593.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/28917651513.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/44660705976.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tevegijetowid.pdf
    • https://cdn.shopify.com/s/files/1/0440/1725/4558/files/68005231462.pdf
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/63869745864.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/sanijatotapezanemo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1202/2691/files/fumupudiwipagorugogo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3747/files/82468213999.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/30486020121.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_off00005b1c.bin
901ec4b29084da136271d5659787771a2b78c8fb4cc442bbd5b90016c780e219
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1C 5240 bytes
font_01_sfnt_off00006cf9.bin
f33b3e26f13e7bdef6ad5c71a96da108498b271cf4bdaf92b28f7934b9d8f017
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF9 10564 bytes