Malicious PDF — malware analysis report

Static analysis result for SHA-256 5acf00ac0d4778c0…

MALICIOUS

PDF

52.0 KB Created: 2020-08-02 07:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a302394164ac14fd07c9ea8ec08b6bef SHA-1: f288a069228b88a704aa9256e9799edaf3557c7d SHA-256: 5acf00ac0d4778c0dd4d53759298081d632540cdaf47248234f057a452d3429b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. The primary malicious URL, 'https://ttraff.com/pify?keyword=erroneous+zones+wayne+dyer+pdf', is identified as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a link farm or redirection tactic to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=erroneous+zones+wayne+dyer+pdf
    • http://files.thesjrphotography.com/uploads/1/3/1/4/131406437/1bae4d9d441b35.pdf
    • http://files.nicholasvdistefano.com/uploads/1/3/1/3/131379312/xowekagi_bosilorakevovo.pdf
    • http://files.magicrepair.net/uploads/1/3/0/8/130814515/fovizilox-wifonun-tujifozuzizo.pdf
    • http://files.manassastowingservice.com/uploads/1/3/1/6/131636891/241fadec315cf32.pdf
    • http://files.cgworrell.com/uploads/1/3/0/7/130775275/592252.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9567/0432/files/28311118364.pdf
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/jomekijep.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/59517088879.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/gapenabomozewizunigu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/gepesizedotorugobujaju.pdf
    • https://cdn.shopify.com/s/files/1/0437/7175/6698/files/66893395305.pdf
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/bebipofasawigup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/banefidofekadozimodomi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/sakapodosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/32790004276.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/sunuvurafegimavepupag.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e0c.bin
5cda896590d70818f3b3a15ea48b4391880cf54a29b30eb7cff7b5ef91a127bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0C 5204 bytes
font_01_sfnt_off00009ff7.bin
6e1ab769d2fb84accfd28c31bd63174c849f1b9dbcb1faecd62943bbe8ad308b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF7 10124 bytes

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