Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68dabfaaa31ec2c…

MALICIOUS

PDF

33.1 KB Created: 2020-08-30 03:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b1907c7cf8ec9530f6e1bf23b4cc9bd SHA-1: 376ddb1a2dd11c82406355df959307866707c26c SHA-256: c68dabfaaa31ec2c864d84fce8c1df34ae27a341711a28467b7c64967da49b9c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/wix?keyword=florida+collections+textbook+6th+gra', points to known malicious redirector infrastructure. The presence of a link farm suggests an attempt to obscure the final malicious destination or to engage in SEO poisoning for malicious purposes. No scripts were extracted, and the document body is heavily obfuscated.

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/wix?keyword=florida+collections+textbook+6th+gra
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/sitonofarekalazuviz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/pewejovefokejixosanapir.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/rodudujevuzorodek.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae6b6a3abb8f4e8797b7cd5b917673a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc503f24417b462ea3bc3be0090d796d.pdf
    • https://static.usrfiles.com/ugd/b8c837_8fd8ef06d5e1496ba36508712f43b540.pdf
    • https://static.usrfiles.com/ugd/b8c837_9b3437ac93af4eedb579bd23c38eb787.pdf
    • https://static.usrfiles.com/ugd/d2751c_f96355ec29114ecf8bafc4c879aee0d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0869b92a508407a95528e431fe236b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_d63f25ce60ad4de588bf4f080ca682e0.pdf
    • https://static.usrfiles.com/ugd/10e3af_fba8dd422ae945ccbac3d04a92d1893b.pdf
    • https://cdn.shopify.com/s/files/1/0434/4895/9142/files/girl_scouts_heart_of_the_hudson.pdf
    • https://cdn.shopify.com/s/files/1/0434/3981/6861/files/pamadagigunubojomiwozod.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/6111551223.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_off00004296.bin
a21b51032e5e610257bf46c282d6939b7abbc3861de1f718ce0abdcd5839dfdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4296 5584 bytes
font_01_sfnt_off0000558c.bin
720fa6325485f0498a07fe47194cfee0840bdd0a98af50efd15429a76308e52c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x558C 10144 bytes

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