Malicious PDF — malware analysis report

Static analysis result for SHA-256 396e9b10ecc98aaf…

MALICIOUS

PDF

41.7 KB Created: 2020-08-24 16:26:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee2559b67fe5243a024787e3edf58811 SHA-1: b3c2bc9658f0faf57d08eaf881a506fd1e875ffa SHA-256: 396e9b10ecc98aafb23ba2cbe023301106037166feba7f46d816708616142f40
130 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a malicious redirector and part of a link farm, likely intended as a lure. The document body, though heavily obfuscated, contains text suggesting a question or invoice, aligning with the SE_INVOICE_LURE heuristic. The primary malicious IOC is the ttraff.com URL, which is linked directly from the document and flagged as malicious.

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=sds+please+answer+this+question
    • http://files.sinkpong.pub/uploads/1/3/1/0/131070459/vekugoruju-lumevutavejo.pdf
    • http://files.mynttl.com/uploads/1/3/0/7/130740097/ruzisuneri_vunojudimopisan_doxiwodape_xuruxudiboril.pdf
    • http://files.nanolab.info/uploads/1/3/1/3/131379749/befuraxigufero.pdf
    • http://kubig.omorikuratau.com/uploads/1/3/1/3/131398091/mijutewisokifob.pdf
    • http://jovewati.eunsooklee.org/uploads/1/3/2/8/132814930/lulemovuki-kidabubajejupew.pdf
    • https://cdn.shopi
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/wuwukawivemuwiviro.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/corolla_hatchback_manual_review.pdf
    • https://cdn.shopify.com/s/files/1/0434/2952/7719/files/comic_strip_template_free_printable.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/sakepafasoneja.pdf
    • https://cdn.shopify.com/s/files/1/0466/4459/2805/files/32096677593.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/mozijoladifosajasemut.pdf
    • https://cdn.shopify.com/s/files/1/0428/8947/8307/files/punof.pdf
    • https://cdn.shopify.com/s/files/1/0438/8516/6760/files/30708189735.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_off0000643b.bin
a75ca9d52b55ad313bc8f5e956c7ad183782f732b01f06d408afa7a41b3c5d09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x643B 5368 bytes
font_01_sfnt_off00007678.bin
916c673e2084eba28ec8779f2ed624813e21ee77f0676cd44dc08189f6565736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7678 10300 bytes

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