Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a65f9da1652fd1…

MALICIOUS

PDF

40.5 KB Created: 2020-08-02 04:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90e7e7175da510522c22057399b36f2e SHA-1: 206df908f5cc7e87cc8cd781473ade6388873dfb SHA-256: c5a65f9da1652fd1d3d6bdd8dbe2edb59a07535ea193055b54bd7703b9cb15ce
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure via the URL https://ttraff.ru/pify?keyword=section+32a+of+registration+act+1908+pdf. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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=section+32a+of+registration+act+1908+pdf
    • http://files.staggerapparel.com/uploads/1/3/1/6/131607777/3682843.pdf
    • http://files.sunmarketingsales.com/uploads/1/3/1/4/131483391/990c5272d536145.pdf
    • http://files.oace.co/uploads/1/3/1/3/131381781/parotakime.pdf
    • http://files.littleheartrocks.com/uploads/1/3/0/7/130739916/pafuf-gijuzej-xubura.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/1784249686.pdf
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/44382176086.pdf
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/64134999285.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/59496038995.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/50388703254.pdf
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/wataxulupowok.pdf
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/rajud.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/ribad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdf
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/10009054624.pdf
    • https://cdn.shopify.com/s/files/1/0437/3381/1351/files/11183876979.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_off00005dc6.bin
573a61bd5f5332ad1130289ef63185246d4a4dab4c7f6ea10df380eb9f9a0383		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC6 6236 bytes
font_01_sfnt_off00007306.bin
3d7367b519b313ad5ab986f9c0908452066aff29a914124e4fa221405b8420f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7306 10000 bytes

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