Malicious PDF — malware analysis report

Static analysis result for SHA-256 7294d6133790175d…

MALICIOUS

PDF

42.8 KB Created: 2020-08-30 15:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 042b0dfd5c491e4bbb922f44cbd9db15 SHA-1: 722379137141c44aa16439211001d58b3be84dc5 SHA-256: 7294d6133790175d21e2b2dffdf0789cfede8d6300c367f1c185a4618909395b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure (ttraff.com), indicating a likely phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to medical equipment and the PDF's creation tool, suggesting a lure. The presence of numerous external PDF links, many pointing to benign content, could be an attempt to blend malicious links with legitimate ones or to inflate search engine rankings.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/wix?keyword=canula+de+guedel+tama%25C3%25B1os+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/6846fe_3656677aa2e545b9a4b1c5b7c9b0b2fa.pdf
    • https://static.usrfiles.com/ugd/9b7d8a_ba29393457c9452c9529241453157436.pdf
    • https://static.usrfiles.com/ugd/b8c837_c0adad6502bf40ae8d924276af56824c.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc2ca64bcc87477fb5d65930b045d250.pdf
    • https://static.usrfiles.com/ugd/80c1db_634a220ed95649c2a173f7170e2da2e4.pdf
    • https://cdn.shopify.com/s/files/1/0441/4488/5912/files/2787471292.pdf
    • https://static.usrfiles.com/ugd/b8c837_62a5d968ecc846639d3de5cc1a6faf2a.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_fa34a378c9c145659d236795dca21cbf.pdf
    • https://static.usrfiles.com/ugd/b98abb_7cb67104ab46479b980337e3cce40eee.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_409e3fc3173b4ed88553a8c921b77af0.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/39214614174.pdf
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/pasimo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/xisowisujijikuxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xaxigeruver.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006629.bin
7ff1d23062ffc8a87ee0fc34e2163dc7e9365cf8a2b65e1d9afc0495f6b20d6d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6629 5384 bytes
font_01_sfnt_off0000782c.bin
16e701400d9e8daa4ef021a1702cbbe0c598808ff730a493701ae995a30368e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x782C 11348 bytes