Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea154663629bdd28…

MALICIOUS

PDF

47.0 KB Created: 2020-08-08 10:54:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b813a0f4d5fe5cf4ccfa8102e56e01c8 SHA-1: c2640e76564a577a059193bd4be26545eeaf4dcb SHA-256: ea154663629bdd28cfd02735f569f1aaa40604a0fa871833868cc1a5f2cf5595
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'ttraff.com'. This suggests the document is designed to trick users into visiting malicious sites. The presence of numerous links, including a 'link farm' hosted on Shopify, indicates a broad distribution attempt. No scripts were extracted, but the PDF structure and heuristics strongly suggest a malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=contract+agreement+letter+sample+pdf
    • http://setuxusi.paratofamilydental.com/uploads/1/3/1/4/131407089/binegolanodoja_terozogeloxaj.pdf
    • http://files.oldedwardians.org/uploads/1/3/2/6/132695839/rofanezusis.pdf
    • http://mubapasa.victoryhinesville.com/uploads/1/3/0/7/130740025/91c2140b.pdf
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/21412014097.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/xamuwowidawutexi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2051/files/4059432860.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vonabubabosutogoxofe.pdf
    • https://cdn.shopify.com/s/files/1/0435/1354/4863/files/discord_not_playing_sound.pdf
    • https://cdn.shopify.com/s/files/1/0431/4031/7335/files/6853263784.pdf
    • https://cdn.shopify.com/s/files/1/0434/9886/4804/files/51355364350.pdf
    • https://cdn.shopify.com/s/files/1/0432/6719/5040/files/73610601321.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/pdf_sedentarismo_obesidad.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_off0000793b.bin
285133ee7cd7cd6076049bf20b800c3dda8ec0e3f862fdc71c92b84fc963ba34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x793B 5380 bytes
font_01_sfnt_off00008b6b.bin
77130f006067de546ff69a4b290d8b77309191dfe299aed6f27efe1ae8b0eabc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6B 10532 bytes

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