Malicious PDF — malware analysis report

Static analysis result for SHA-256 309451a3ec72dfc9…

MALICIOUS

PDF

39.7 KB Created: 2020-08-19 20:03:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24dc16342d64952e022d5c2201b88447 SHA-1: 2145c7576013f23790a262f67d88d59b6291bf4d SHA-256: 309451a3ec72dfc9b44bacfe20f37dbba5b9e93bd5a408261b0b47e2d9046f50
142 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as an offer for 'cheapest insulated roofing sheets'. This, combined with the heuristic indicating a callback phishing or tech-support scam lure, suggests the document's primary purpose is to trick the user into clicking the link. The document body itself is heavily obfuscated but contains the malicious URL. No scripts were extracted from this sample.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=cheapest+insulated+roofing+sheets
    • http://medixad.artsxtra.com/uploads/1/3/2/7/132712323/8032583.pdf
    • http://files.theyellowtree.ca/uploads/1/3/2/6/132696171/5539194.pdf
    • http://files.captainmorganssailcharters.com/uploads/1/3/1/3/131381607/b178bb.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/rakape.pdf
    • https://cdn.shopify.com/s/files/1/0436/5575/7977/files/97271944500.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91428743782.pdf
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/javixajomo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/tutezok.pdf
    • https://cdn.shopify.com/s/files/1/0439/6616/9246/files/97217272163.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/xilalawasum.pdf
    • https://cdn.shopify.com/s/files/1/0430/0672/2211/files/75522048300.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/64474740726.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/bedroom_design_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0429/0114/3715/files/6206326469.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/nozilik.pdf
    • https://cdn.shopify.com/s/files/1/0436/9635/7530/files/rizoxofibipomosadoronof.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_off00005e08.bin
7a0bd8d436b73855228a71e9dd97e2b43b14f216da2ea3c27230d5d3015c42b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E08 5208 bytes
font_01_sfnt_off00006fb0.bin
0164efc8e3974cd854cb211bda08ece74bef76097f0d25dbd53cfb25f11d45a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB0 10048 bytes