Malicious PDF — malware analysis report

Static analysis result for SHA-256 c47da87c9e7b9a0f…

MALICIOUS

PDF

33.9 KB Created: 2020-08-03 04:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6aa02d60532dd4099b21901d6ecfa6f2 SHA-1: 34537fadf6d5c9abf5869595e6492101d9ca4282 SHA-256: c47da87c9e7b9a0f191509899c82d78e1df0fb6d89f6201861ef92518f34c88f
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic search engine results, directing users to a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=modern+control+engineering+ogata+5th+edition+pdf, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the malicious URL and several benign-looking Shopify URLs, suggesting a social engineering tactic to disguise the malicious intent.

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=modern+control+engineering+ogata+5th+edition+pdf
    • http://files.insideoutclips.com/uploads/1/3/0/7/130775498/jepekimoreni.pdf
    • http://files.5rocksdistilling.com/uploads/1/3/1/4/131408432/acb4eac2f7.pdf
    • http://ridewo.primariusstaffing.com/uploads/1/3/1/4/131411688/2236150.pdf
    • https://cdn.shopify.com/s/files/1/0440/6103/2598/files/79913920067.pdf
    • https://cdn.shopify.com/s/files/1/0433/6825/1543/files/tefox.pdf
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/vajaxagugunufutarof.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3990/files/snmptrapd_conf_example.pdf
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/fexodutaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/93236758995.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/40059924761.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1520/files/gadativor.pdf
    • https://cdn.shopify.com/s/files/1/0434/3378/7542/files/janeseto.pdf
    • https://cdn.shopify.com/s/files/1/0428/2089/4886/files/88534470487.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_off00004749.bin
34c30da622f3fb8dd4a02f68014fc908666a617ad26eb10e09db1d933bff40ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4749 5368 bytes
font_01_sfnt_off00005998.bin
c7a7af6b514facedc4bf85f4af74f9d1415c337d49df2d05d695a3cd0f6c5e8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5998 9640 bytes

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