Malicious PDF — malware analysis report

Static analysis result for SHA-256 f24c320f262970de…

MALICIOUS

PDF

51.4 KB Created: 2020-08-09 16:05:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ad83a8b45439e4a3d039a125c2b6531 SHA-1: 7991c7a074b272cbc49ea77afa657041f962bba6 SHA-256: f24c320f262970de70232964acfe2fa78e2a50ccfa32babc7a72bb8eded40de7
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests a phishing or social engineering attack aiming to redirect users to malicious 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=abbyy+pdf+transformer+12+portable
    • http://files.bethanylutheranrlf.com/uploads/1/3/1/3/131381819/sizumomonogup.pdf
    • http://files.bonavitapt.com/uploads/1/3/1/4/131453132/rafadagorog.pdf
    • http://files.agorapublications.net/uploads/1/3/2/6/132682570/4da5af8.pdf
    • http://files.msluxecosmetics.com/uploads/1/3/2/3/132303359/2443763.pdf
    • http://files.lisleband.com/uploads/1/3/1/8/131857334/gopotulam_gerodazap_dinevupe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/48518282602.pdf
    • https://cdn.shopify.com/s/files/1/0429/9459/8047/files/xufagenixivam.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/37747425974.pdf
    • https://cdn.shopify.com/s/files/1/0437/8542/0949/files/is_1_mb_a_lot.pdf
    • https://cdn.shopify.com/s/files/1/0433/6975/8874/files/biociclos_e_biomas.pdf
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/61790832243.pdf
    • https://cdn.shopify.com/s/files/1/0437/3128/8218/files/29689001627.pdf
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/folomijur.pdf
    • https://cdn.shopify.com/s/files/1/0448/2046/3776/files/m_audio_fast_track_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0447/3330/0885/files/webasto_standheizung_bedienungsanleitung.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3907/files/gamiderazogorefapato.pdf
    • https://cdn.shopify.com/s/files/1/0433/6209/1167/files/behavior_psychology_books.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_off00008797.bin
6fd5fd55e8b2b4c8d67910ee1ab48aaacff305ac657a624df3c8c3c0530dc3e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8797 5604 bytes
font_01_sfnt_off00009a95.bin
a92d2a2f3cc47f816da675b23cf2c7428541ca84192144c19e4b98c5fbb29b7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A95 11032 bytes