Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c9980fe889b9260…

MALICIOUS

PDF

51.3 KB Created: 2020-08-08 18:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7be26a490b9427ab7f1b21dfd3de4f43 SHA-1: 64d9153175645ebd126d5178c2603f5530ec654e SHA-256: 4c9980fe889b9260946a095bf90627f13e2e3671b39e3d3adf211f1e9900c992
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure related to a book title, and the file itself is structured as a PDF. The presence of a malicious redirector link suggests an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

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=berenice+poe+pdf
    • http://files.luismaldonado.org/uploads/1/3/2/7/132710748/46953e6.pdf
    • http://files.ecogrowhawaii.com/uploads/1/3/2/6/132681513/wekufutese_gizorapo_vevajavemuk_xetesutumed.pdf
    • http://files.andrzejbojarski.com/uploads/1/3/0/7/130740062/c087c0d289d.pdf
    • http://files.rmdobermans.ca/uploads/1/3/0/9/130968935/9960535.pdf
    • http://misal.toyama-book.org/uploads/1/3/1/6/131606407/rimeforatimexijinif.pdf
    • https://cdn.shopify.com/s/files/1/0434/3939/0872/files/b._ed_psychology_book_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8139/files/lefavulofipi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1048/0533/files/gilemogu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/pigukuzovukog.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/guide_to_tcp_ip_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/8486/4917/files/xawonozomolejorefu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/lubabejezugulanereferud.pdf
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/cement_plant_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/present_simple_present_continuous_exercises_test.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/nevodomiruwitajuwasuk.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_off00008c8e.bin
e82ff65fbeab0675b9170422e9b9a326242434df2b31bfd865dfa6b9ee1f2ffa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8E 4776 bytes
font_01_sfnt_off00009ce2.bin
b8f15a8364cc54be9261356df17655ecb4433ef33f8bd7cca277620446d5c3ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE2 10368 bytes

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