Malicious PDF — malware analysis report

Static analysis result for SHA-256 3668db8696f9a809…

MALICIOUS

PDF

39.4 KB Created: 2020-07-31 17:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 541ed826150622321ffcc9efb57399a9 SHA-1: 8226bc10e090ee0d3eb96cc414cb65efc005cce2 SHA-256: 3668db8696f9a809d49f4155030df47ec62724936af762973e2f9fec8f8754fd
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or redirection strategy. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the string 'lee vista dmv' and the malicious redirector URL, indicating a potential lure related to government services. No scripts were extracted from this sample.

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.cc/pify?keyword=lee+vista+dmv
    • http://files.quickstitchplus.com/uploads/1/3/0/8/130814252/3234719.pdf
    • http://files.afrikattebengals.com/uploads/1/3/1/0/131070611/simemuxezitu.pdf
    • http://files.rye6740.org/uploads/1/3/0/8/130873826/zobelovupefe-xogunivul-tixosubanujudo.pdf
    • http://files.nathanbirr.com/uploads/1/3/0/7/130739570/dipuganar_voxak_woxekomagibukal.pdf
    • https://cdn.shopify.com/s/files/1/0439/4608/2472/files/kegeguluxerewadeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/gokafo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9281/1669/files/97511472667.pdf
    • https://cdn.shopify.com/s/files/1/0436/8865/7051/files/21664910099.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/guninu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2870/9539/files/zeroturijipiju.pdf
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/dazibudafuvazutax.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/tofukizewi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8079/4790/files/6159798494.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/vejosumemewavivej.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/juzinis.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_off00005c43.bin
710f8dba96d6485854ff85215ecaad88ba98e39f50071544df6502790942951a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C43 4844 bytes
font_01_sfnt_off00006cb1.bin
06ffeae6d5fc2913be55fc900c2f80d932bb2c08d1e12f6682f80ad157fe9a7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB1 10508 bytes

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