Malicious PDF — malware analysis report

Static analysis result for SHA-256 39c967895452670a…

MALICIOUS

PDF

55.7 KB Created: 2020-08-29 23:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 852e83fdf6852c0c0f8817cd8c20229e SHA-1: 8e6dc80efd5af045f469331beb43631c57272600 SHA-256: 39c967895452670a176a1cae4291d043769e24ece4405d1a66c0c759018348db
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a phishing or malware download page. The document body, though heavily obfuscated, contains the URL that triggered the heuristic, reinforcing the malicious intent. No scripts were extracted, but the PDF structure itself is used to facilitate the malicious redirection.

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=bezpe%25C4%258Dnost+kr%25C3%25A1je%25C4%258D%25C5%25AF+potravin
    • https://static.usrfiles.com/ugd/576447_3b0c9172b7374671b1a31783e8d6a5b0.pdf
    • https://static.usrfiles.com/ugd/d01287_772e3e18d6c34df4b13f6f014a9f53ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_f63fa5da256941cfae0d6e715e33bf67.pdf
    • https://static.usrfiles.com/ugd/0779a3_af31765e784541319b77f48c2f3c1fda.pdf
    • https://static.usrfiles.com/ugd/b8c837_1de383fdc8ff445f9343ab234c04cb5e.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3485/files/judefapujo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/how_were_the_12_apostles_martyred.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4366/files/signpost_words.pdf
    • https://cdn.shopify.com/s/files/1/0436/7689/3334/files/sesivenezibanitewid.pdf
    • https://static.usrfiles.com/ugd/83b1b3_51da31253c4f46b7a728b7d486b3cea0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8c4c6b8ac9e40a89c928cd2f02856af.pdf
    • https://static.usrfiles.com/ugd/b8c837_3613a9d2513a4ce6bbefef911945bafe.pdf
    • https://static.usrfiles.com/ugd/cd79e3_521218ee53524afb89b1a72bba970899.pdf
    • https://cdn.shopify.com/s/files/1/0427/9799/0055/files/33373319882.pdf
    • https://cdn.shopify.com/s/files/1/0437/2309/6216/files/28682727010.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082d2.bin
b91c48d6323e468576a2efe054e4a715ca4200d5ad814314a38f1b45144829dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x82D2 5648 bytes
font_01_sfnt_off00009560.bin
2ff5a91ea7d93546b02959e2fd3eea65d3a75ed7cb308c3f86f6618cdc48d0d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9560 12604 bytes
font_02_sfnt_off0000bb2b.bin
d7c0313d84b709fe8a6a90baca56b34c20eeda1db47cffc02c31991c89a68c0d
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB2B 16080 bytes