Malicious PDF — malware analysis report

Static analysis result for SHA-256 f502d6ac04a5996d…

MALICIOUS

PDF

49.0 KB Created: 2020-08-22 04:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ebf01e6ed7ce8bd15ee775f59982b2c SHA-1: 264324416ea04434f28c5e6dbbf8b0b5bff14b26 SHA-256: f502d6ac04a5996dfc9d6a5b0c25be44afe3108e5b654c222b217aea105097c2
120 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to the presence of a large number of embedded links, forming a link farm. One of these links, https://ttraff.cc/pify?keyword=himen+falciforme+definicion, points to a known malicious redirector. The document's structure and embedded links suggest an attempt to lure users to external 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.cc/pify?keyword=himen+falciforme+definicion
    • http://files.cozykidsembroidery.com/uploads/1/3/1/4/131409170/ninebafakafekip.pdf
    • https://cdn.shopify.com/s/files/1/0445/7719/4148/files/61495490558.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/jebopoliribujiveduvolu.pdf
    • https://cdn.shopify.com/s/files/1/0446/6071/9779/files/bitdefender_2018_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/lukomuxux.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2667/files/ludonedigeduxuwud.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6491/files/39211517291.pdf
    • https://cdn.shopify.com/s/files/1/0431/4434/7799/files/xufedasexafaze.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/artaud_anthology.pdf
    • https://cdn.shopify.com/s/files/1/0431/7626/3841/files/brutal_age_horde_invasion_mod.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_off0000807a.bin
07f66752d507e88df0982b423282c1f2e05899db6891be95694c29147c53211e
pdf-font-stream PDF embedded font (sfnt) at offset 0x807A 4948 bytes
font_01_sfnt_off00009124.bin
43bec739c863dee1dda1f2df75f921c43f91f06bc6b7a66d0a450ba47789baa4
pdf-font-stream PDF embedded font (sfnt) at offset 0x9124 11304 bytes