Malicious PDF — malware analysis report

Static analysis result for SHA-256 28ae460373d18a1f…

MALICIOUS

PDF

42.2 KB Created: 2020-08-17 16:30:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a0933a67b00b586a80cd7df23b16f15 SHA-1: 3236c9eb9566e8b70af9a765a3e4027dc6ca6f0c SHA-256: 28ae460373d18a1f7237b584bf32c5f9e315333b9a728a33193a6768085194ca
140 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the ttraff.com domain. The document body and heuristics suggest a lure related to a 'utility bill', aiming to trick the user into clicking the malicious link. The presence of a large number of external PDF links further indicates a link farm or redirection strategy.

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=sample+utility+bill+pdf+uk
    • http://files.ce-naturalhealth.com/uploads/1/3/1/8/131856645/merazufenazafadi.pdf
    • http://nidelowe.cbtbowling.com/uploads/1/3/1/4/131453990/5bad533aa6daf8a.pdf
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/94810290344.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8801/files/jomagikurofiviwovopas.pdf
    • https://cdn.shopify.com/s/files/1/0440/1928/6174/files/autodesk_bim_360_docs.pdf
    • https://cdn.shopify.com/s/files/1/0434/1340/5850/files/68102902183.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0590/files/16304448375.pdf
    • https://cdn.shopify.com/s/files/1/0434/2644/7525/files/61281489086.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/66486756629.pdf
    • https://cdn.shopify.com/s/files/1/0437/0379/5865/files/76851682578.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059b2.bin
00a72c07ffb7bb63d738fd2406f27c09e8f4b47449f710c37dbe25f32c0b7f6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B2 4988 bytes
font_01_sfnt_off00006ab8.bin
f901ea1d02858e0b182b916a30f29d7a9115d4eecde5578fb0e66452452302cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB8 10936 bytes
font_02_sfnt_off00008e89.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E89 4324 bytes

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