Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6c58b583f16f70…

MALICIOUS

PDF

39.8 KB Created: 2020-08-08 06:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea245d6aab84d0ebee378b213f4e7123 SHA-1: 3fa6ccbda610b4caa8c0c573ef6d9509778c9e35 SHA-256: 0c6c58b583f16f702f72cbe4d7af14862b7f0b9bc3a752e29dfe0e24f2e643e8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The embedded URL, 'https://ttraff.com/pify?keyword=business+model+canvas+pdf+a4', is designed to trick users into downloading further malicious content. While no scripts were explicitly extracted, the PDF structure and link farm suggest an attempt to distribute malware or lead users to phishing sites.

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/pify?keyword=business+model+canvas+pdf+a4
    • http://mevejizam.sandiegolinks.org/uploads/1/3/1/4/131409090/rizalovibatidofi.pdf
    • http://files.ajaanimations.com/uploads/1/3/1/6/131606874/bivufoganeruveko.pdf
    • http://files.letsleepingpigslie.com/uploads/1/3/0/9/130969489/votola.pdf
    • http://files.leadershipfortoday.co.uk/uploads/1/3/1/4/131453106/gawirizagit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/galebijapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3970/files/finibotuwux.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/1281674138.pdf
    • https://cdn.shopify.com/s/files/1/0435/9074/6271/files/the_serotonin_power_diet_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7897/4616/files/takuwibuxumizi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dedijadexurusefux.pdf
    • https://cdn.shopify.com/s/files/1/0433/7657/4620/files/13928323957.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5293/files/gesejixupikusakelezimubor.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1415/files/47012521950.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/jagejatutidozefo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/management_des_administrations_publiques_et_territoriales.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_off00005e1c.bin
90b27d4aa01edf08970453c5af6d14ff5ed7818148b4a30d7a4ab43e92e2138f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1C 5404 bytes
font_01_sfnt_off00007080.bin
110c25c24046b35d336ee0a0402c0198cc32b7d08b8ad376370424d8d560a19b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7080 9928 bytes