Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae06b79943e79d90…

MALICIOUS

PDF

62.5 KB Created: 2020-08-21 14:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95e7ce7689cc2bd9db227f3f175ffe7c SHA-1: bc4c0ae85d3358b34dc4d31491bb6a33ced1e78a SHA-256: ae06b79943e79d908dc4ff7140c2349cc5a0ec6e0b191dcccbda7935874eb2b4
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The link leads to a URL that is part of a link farm, suggesting a phishing or malware distribution attempt. The document itself appears to be a lure, using 'jazz clarinet sheet music' as a pretext to encourage clicks.

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=jazz+clarinet+sheet+music
    • http://xapom.airlineace.com/uploads/1/3/0/8/130814328/5696733.pdf
    • http://files.minebricks.com/uploads/1/3/2/7/132740836/2090716.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5877/files/foxom.pdf
    • https://cdn.shopify.com/s/files/1/0437/4547/6762/files/human_anatomy_and_physiology_book_for_pharmacy.pdf
    • https://cdn.shopify.com/s/files/1/0430/6255/8874/files/pexesikebuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/41335456820.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/1621904897.pdf
    • https://cdn.shopify.com/s/files/1/0440/4881/0149/files/mejoka.pdf
    • https://cdn.shopify.com/s/files/1/0429/0953/2316/files/vijamabesuxumedufatoji.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/stored_procedure_in_sql_example.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_off0000902a.bin
c40c23ad5f33fc13d9ac4af21a41b33b8119ebec73d636657d3bdf5dc2faac29
pdf-font-stream PDF embedded font (sfnt) at offset 0x902A 5080 bytes
font_01_sfnt_off0000a146.bin
5b7f902960acd52993856837c2f7b974d239981c9bdf1aa679fec91003a63474
pdf-font-stream PDF embedded font (sfnt) at offset 0xA146 16996 bytes
font_02_sfnt_off0000d5d5.bin
bebdae4f72cee612b1595ede016db5bd0d111515040e9f0eaeddc625df1d0941
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D5 16292 bytes