Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b345bd609a107db…

MALICIOUS

PDF

37.1 KB Created: 2020-08-07 10:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7403de49b0883e96c9ff8f3de465c73c SHA-1: efca4d353346342ee349445f2243e0199d086a9a SHA-256: 3b345bd609a107dbc4255238740937ecb1d0230819d663cc9c44d3f8638dfc89
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The primary malicious URL, https://ttraff.ru/pify?keyword=caminito+de+la+escuela+letra+pdf, is flagged as a redirector. Another embedded URL, https://cdn.shopify.com/s/files/1/0428/7240/6179/files/javascript_clear_cache.pdf, is also present. The document body contains obfuscated text and these URLs, suggesting a lure to external malicious content.

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.ru/pify?keyword=caminito+de+la+escuela+letra+pdf
    • http://joxavex.foolsforchrist.net/uploads/1/3/0/9/130969204/voxaginuvilarivik.pdf
    • http://files.cruisenvacationdeals.com/uploads/1/3/1/3/131379833/98141fb40ef23b.pdf
    • http://files.newmorningacres.com/uploads/1/3/2/6/132680962/fitusemef-mifuzejonaxif-limagawebavupo.pdf
    • http://files.shyzarsue.com/uploads/1/3/0/9/130968967/fajikulovukikito.pdf
    • http://files.pedicureherent.be/uploads/1/3/1/4/131453251/fojabo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/javascript_clear_cache.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0133/files/jeduroteletomifijudew.pdf
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/unir_dos_en_uno_solo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/pitney_bowes_us_smartlink_setup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/bopefatemaxodod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/19079013322.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/95144573528.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munununexarusod.pdf
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/vuwagaburikozozelidenefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/netul.pdf
    • https://cdn.shopify.com/s/files/1/0437/0916/9815/files/vuliwi.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_off00005143.bin
3b89afaea277503c27f65cf67b47bf652a8db385a3c7f6d3a95ad8584c354a2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5143 5208 bytes
font_01_sfnt_off000062de.bin
3c92f7f0d0989d5ce5be2e3611c75d5d597eb2808700486c3170be518b05e9e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DE 10912 bytes

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