Malicious PDF — malware analysis report

Static analysis result for SHA-256 f42d168bed34e83a…

MALICIOUS

PDF

49.0 KB Created: 2020-08-24 00:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 671e3ceb0ed99448bdd4df453c5a09ff SHA-1: 2e5db9e1aed40287085a40e8af86f40a8b82900f SHA-256: f42d168bed34e83a468018d25308d6d122f9a53c342897691ef8dea313cc0c59
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically `ttraff.com`. Additionally, it exhibits a PDF link farm pattern, hosting numerous external PDF links, many of which point to `cdn.shopify.com`. The document body, though heavily obfuscated, contains the URL `https://ttraff.com/pify?keyword=character+sheet+template+online`, suggesting a lure to a malicious site disguised as a character sheet template. The presence of a large number of external links, combined with the malicious redirector, indicates an attempt to lead users to harmful content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=character+sheet+template+online
    • http://files.josephdeansdesign.com/uploads/1/3/1/3/131380495/4379039.pdf
    • http://files.niavanabelgians.com/uploads/1/3/0/7/130775698/duxuzupiwog.pdf
    • https://cdn.shopify.com/s/files/1/0433/7162/6659/files/vikekupewusupejimov.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/walmart_donation_request_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/polasetuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/tisudawiliwovaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedapefe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1624/1831/files/can_blockchain_revolutionize_the_supply_chain.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/54144269249.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/xuvosi.pdf
    • https://cdn.shopify.com/s/files/1/0441/0979/1384/files/apache_hive_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/9381/9541/files/20545759028.pdf
    • https://cdn.shopify.com/s/files/1/0440/4389/4934/files/90933878407.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2741/files/descargar_temario_administrativo_del_estado_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/acca_f5_past_papers_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/3538/4225/files/10730523104.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_off000081e4.bin
c99183f3e91714be5d9675a316091e8177095bda1e17514325c037d866a443be
pdf-font-stream PDF embedded font (sfnt) at offset 0x81E4 5076 bytes
font_01_sfnt_off000092ff.bin
a7170b616dff0a62ec6235b66e171f4e67f994e3b9a18d980df961b5cf95ffc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x92FF 10516 bytes