Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b8d4198bcb4208…

MALICIOUS

PDF

40.8 KB Created: 2020-08-18 16:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 073652ee029f98dead604aa133024659 SHA-1: 0836c0895b5c3d1741653c94025c9fc4ac563f63 SHA-256: 27b8d4198bcb42087807aab4fd70f54271424b7d80b8a73f0a3572eb81893954
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector, indicating an attempt to lead the user to harmful content. The document body, though partially corrupted, suggests a lure related to a 'car bill of sale receipt template', aligning with the SE_INVOICE_LURE heuristic. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious infrastructure.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=car+bill+of+sale+receipt+template
    • http://files.monskycreations.com/uploads/1/3/0/8/130814605/zadewubopubixon.pdf
    • http://files.menofoar.com/uploads/1/3/0/9/130969885/jetafo-kizaje-vukajo.pdf
    • http://files.cosmicportal.us/uploads/1/3/1/0/131070420/xezidudegijurozowagu.pdf
    • http://fawis.mardenridingclub.co.uk/uploads/1/3/0/7/130738732/43d77c6a84c68b.pdf
    • http://files.diamondcb.com/uploads/1/3/0/9/130968921/zigupilafiwet.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/6531083310.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8453/files/los_escritores_de_la_libertad_libro.pdf
    • https://cdn.shopify.com/s/files/1/0438/3506/4480/files/emotions_vocabulary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/16262929978.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/23146281547.pdf
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/critical_thinking_skills_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/81640760244.pdf
    • https://cdn.shopify.com/s/files/1/0431/1285/7754/files/wrong_turn_8_trailer.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_off00006466.bin
600656e59df114dc5144e7de41e6d5e5f157d73f05b511dd9feb1dd799521ad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6466 5208 bytes
font_01_sfnt_off00007604.bin
fb9dffc13efb7b7f28baef2c15f8ceee1714147c267f025f9904cd8f3bd2ce9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7604 9492 bytes

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