Malicious PDF — malware analysis report

Static analysis result for SHA-256 f484b2560b92fbda…

MALICIOUS

PDF

41.2 KB Created: 2020-08-10 07:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 346fd0d4a9ddb2a8ed1a2126225f3f94 SHA-1: 4678306cdfe8026d340cc7302e36c4e7da3929a6 SHA-256: f484b2560b92fbda9847cf8fb91c9af650c5e14507c3d27c30e2800b42186713
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to accounting terms, as indicated by the document body and the SE_INVOICE_LURE heuristic. It embeds a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The PDF_SEO_LINK_FARM heuristic suggests this is part of a larger link farm operation, likely for SEO poisoning or distributing malware. The primary malicious IOC is the 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.
  • 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=glossary+of+basic+accounting+terms+pdf
    • http://widuxu.drkaylee.us/uploads/1/3/2/8/132814930/kefajulotudo.pdf
    • http://files.perfectlyblendedfarm.com/uploads/1/3/1/4/131455722/xofadavemakapesig.pdf
    • http://files.theurbanfarmhousestore.com/uploads/1/3/1/3/131381003/wejirosibok_xonivoje_mikope_mupinazitadegik.pdf
    • http://files.maraamdwidar.com/uploads/1/3/0/9/130969986/mubelikelasazelobun.pdf
    • http://files.bluemountainrhythms.com/uploads/1/3/0/7/130775762/2489938.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/33229395764.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/7552490042.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/capitalismo_y_comunismo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/96231228640.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/zilerexuwezikotur.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bokowolexom.pdf
    • https://cdn.shopify.com/s/files/1/0433/9302/4151/files/linekowir.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/viwerokerasunelek.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/goxifeturafaranawela.pdf
    • https://cdn.shopify.com/s/files/1/0435/2291/6520/files/289590765.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_off000060e1.bin
cd669626a0d17db4ad75aa0c4313fe09d6c39d07c9fa7b2a168732c798053eb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 5748 bytes
font_01_sfnt_off0000746b.bin
f73a6f2742ea2d68e742354bb7717e1c1f58141dbeca4cdbacadf64ee55e8f2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x746B 10436 bytes