Malicious PDF — malware analysis report

Static analysis result for SHA-256 caba617dcc50c4c0…

MALICIOUS

PDF

37.5 KB Created: 2020-08-17 04:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 460ea97e385821d2b832d543cc66d348 SHA-1: 6de54eb19bf0e29f5e5b18f06ef147eae1d76b27 SHA-256: caba617dcc50c4c0f610678b716674f6566343a2016eeef0a9586761cc432e21
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 pointing to 'ttraff.com' with a keyword suggesting a lure for an Adobe Reader update. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF files, indicating a link farm strategy. The primary intent appears to be redirecting the user to malicious infrastructure to download further payloads.

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.com/pify?keyword=adobe+reader++win+8
    • http://vuxenuvif.coachchriscampbell.com/uploads/1/3/2/7/132712358/ximajese-fewapone.pdf
    • http://zivib.bensalmon.org/uploads/1/3/0/8/130814328/zukunez_kozemumo_sipibumeginako_lagojon.pdf
    • http://files.marianimediation.com/uploads/1/3/1/4/131406437/b7fec3857.pdf
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/concept_of_electrical_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/mebitimojevulidabedilofiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/zoxinofojekeno.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/internalization_theory.pdf
    • https://cdn.shopify.com/s/files/1/0434/6232/8472/files/87871928468.pdf
    • https://cdn.shopify.com/s/files/1/0432/9114/8454/files/92300560327.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/94708535364.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/kodomo_no_omocha.pdf
    • https://cdn.shopify.com/s/files/1/0431/5227/7670/files/78845122509.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_off00005661.bin
f4a596bc6b84f9d82f31e4a2cbdcb4023343345a3d1d4a0b6bf07ba5bb477e80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5661 5024 bytes
font_01_sfnt_off00006791.bin
b9c543b726bcd9d2e72ba42c609c4546e5c136dcb947cfd1b6f055be84bfe719		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6791 9980 bytes

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