Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0737ecc952f3a1…

MALICIOUS

PDF

42.5 KB Created: 2020-08-31 08:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51339a356a5b783e1558549055a7e696 SHA-1: 2bca175bc011166468f13bb3892153f82d32ffa5 SHA-256: 9d0737ecc952f3a1c9d45b0166f13ec4044ff17ab763dc4c76dba65c1081a1dd
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous embedded links. One critical heuristic firing indicates a malicious redirector link to 'ttraff.com', while another points to a PDF link farm with 16 external links, many hosted on Shopify. The document body contains garbled text but also includes the 'ttraff.com' URL and several Shopify URLs, suggesting a lure for potentially harmful content or SEO spam.

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/wix?keyword=duur+strings+mp3+download
    • https://static.usrfiles.com/ugd/b8c837_0958f7cdbc5a413e8d11b08b41f0e310.pdf
    • https://static.usrfiles.com/ugd/2ac701_065abbf238c441ed8b07faf25ee34207.pdf
    • https://static.usrfiles.com/ugd/1d64af_7ea0a7f3c30742c5aef4395aa2747583.pdf
    • https://static.usrfiles.com/ugd/8a419d_206789d95ac24f8085992ce014f76ba7.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34515707504.pdf
    • https://cdn.shopify.com/s/files/1/0435/9746/3715/files/97648725211.pdf
    • https://cdn.shopify.com/s/files/1/0437/2755/2661/files/21713390697.pdf
    • https://cdn.shopify.com/s/files/1/0437/7346/0631/files/brock_lesnar_workout.pdf
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/63942779219.pdf
    • https://cdn.shopify.com/s/files/1/0436/1994/2563/files/fozobidewibixufaferogut.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/2211802182.pdf
    • https://cdn.shopify.com/s/files/1/0436/8800/1689/files/jipitetebarom.pdf
    • https://cdn.shopify.com/s/files/1/0428/7060/3932/files/don_t_starve_mods.pdf
    • https://cdn.shopify.com/s/files/1/0436/0051/1138/files/27878827395.pdf
    • https://cdn.shopify.com/s/files/1/0429/5049/2316/files/wawimumilixiboravibezoluw.pdf
    • https://cdn.shopify.com/s/files/1/0437/8414/2997/files/77897265393.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_off00005b11.bin
fce3f592fb3823165b76e5f69634845fa7c93322073a9029d138c16fd438417b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B11 5536 bytes
font_01_sfnt_off00006de0.bin
b145e6d1b7336b39955ba9d2216694418eda58b4b41877e6dab7da67dde21f8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE0 15372 bytes

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