Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c308ec4b6234203…

MALICIOUS

PDF

50.5 KB Created: 2020-08-21 20:46:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac07693a91b27b18516b3de300fb3305 SHA-1: c4e72bc98b06bc78ff36d9c55cd378da8b1592c2 SHA-256: 9c308ec4b623420323fc329f490cd52fdd69bfeea0b97484041d6746d3542ee8
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=disney+descendants+2+script+pdf'. This indicates the document's primary purpose is to lure users to a malicious site. The presence of numerous other PDF links, many hosted on Shopify but some on unknown domains, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=disney+descendants+2+script+pdf
    • http://sifufepof.mahakaitreasures.com/uploads/1/3/1/3/131381241/vakozekurame_mukale_kafam_libuwasi.pdf
    • http://dojuga.campweempower.net/uploads/1/3/0/7/130775166/delerikotanemevagef.pdf
    • http://taxegepa.keepitstraightsis.com/uploads/1/3/0/9/130969336/0ada019d9f0e.pdf
    • http://files.carzisonfilm.com/uploads/1/3/1/4/131437061/825473.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9583/files/72967339714.pdf
    • https://cdn.shopify.com/s/files/1/0427/9900/5863/files/use_github_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6615/files/barcelona_bus_turistic_route_map.pdf
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/bawomafoloxodisigoremiba.pdf
    • https://cdn.shopify.com/s/files/1/0428/5533/4055/files/gabupefuruw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/zavexozuregerizopidef.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/fiwepeluxotomemujatid.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9797/files/jazatogo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/isometric_dot_sheet_a4_size.pdf
    • https://cdn.shopify.com/s/files/1/0461/9773/5575/files/baaghi_movie_trailer_video.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_off00008767.bin
7b0e283dfd2e9d59abf80dc6ec66ad7483e8018c492f2b41f5cd7a884fbe1db5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8767 5348 bytes
font_01_sfnt_off000099ab.bin
8b06ef6423345135a7d86e47cff03394b0fd98adafcaf9dcfee82eff73f0dd28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99AB 10484 bytes

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