Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d51b9208cf2a538…

MALICIOUS

PDF

41.9 KB Created: 2020-08-24 08:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46b67a46d428fcb0063e793cafe9aa63 SHA-1: 298b9ec05cb693236e06bf96e37ad2fa81f8ce12 SHA-256: 8d51b9208cf2a538e2f83365c12f4ce588311afef41f104573be4f79fc22143e
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple heuristics indicating malicious intent, including a critical finding of a link to known malicious redirector infrastructure. The document body and heuristics suggest a social engineering lure, specifically prompting the user to install a browser update or extension. The embedded URL 'https://ttraff.ru/pify?keyword=google+chrome+executable' is designed to trick users into downloading a malicious file by masquerading as a legitimate software update.

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=google+chrome+executable
    • http://fogirizax.mitchadvent.com/uploads/1/3/1/6/131637046/tajujisokifa_gojedomobeke.pdf
    • http://jedetiwu.houseofgeekiness.com/uploads/1/3/2/7/132712207/8507660.pdf
    • http://files.hearthsidemeadow.com/uploads/1/3/2/6/132682848/8510377.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/victoria_orenze_song_brooding.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/bajirao_mastani_full_movie_mp4hd_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/fallout_4_character_creation_guide_female.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/70151032747.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/sigejatedanenivol.pdf
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/free_printable_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/loxoxolubigebum.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/58354159431.pdf
    • https://cdn.shopify.com/s/files/1/0433/8699/4855/files/conqueror_of_shamballa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/muvara.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_off00006571.bin
162dfab200022b71dd8ebc9431502d79eb02193ee8bc3a28cbcba49d04ba7037
pdf-font-stream PDF embedded font (sfnt) at offset 0x6571 5272 bytes
font_01_sfnt_off0000773f.bin
58785f57a5dcf0dbfb65e9e8e951d41d346ddbb3657684c48e24ff42ffbd6968
pdf-font-stream PDF embedded font (sfnt) at offset 0x773F 10316 bytes