Malicious PDF — malware analysis report

Static analysis result for SHA-256 642a7775da3334ba…

MALICIOUS

PDF

52.4 KB Created: 2020-08-02 02:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f644cc425ed19b34b8e4e75f497f0854 SHA-1: e11ad4fde8b798ea44ac571254d4ead49670ffe5 SHA-256: 642a7775da3334ba3c00f3b2522839c55671476d32c835c66c7f869e8c1a620f
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning attempt. One prominent link directs to a known malicious redirector, indicating a malicious intent to lead users to harmful content. The document body text, though obfuscated, contains the phrase "Pony town commands" and a URL that reinforces this theme, likely a lure.

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.cc/pify?keyword=pony+town+commands
    • http://files.globalcollaborationday.org/uploads/1/3/0/7/130776562/5129918.pdf
    • http://files.joannegreencounselling.com/uploads/1/3/1/4/131437724/jofivivomavo.pdf
    • http://files.sixwhitehorses.info/uploads/1/3/0/9/130970004/d860c6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/lg_g5_root_xda.pdf
    • https://cdn.shopify.com/s/files/1/0431/0899/1142/files/29049781047.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/laruw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98908457197.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdf
    • https://cdn.shopify.com/s/files/1/0434/1055/5041/files/65785165470.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/xaseketamekixusupawuja.pdf
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/48552082793.pdf
    • https://cdn.shopify.com/s/files/1/0437/1785/3335/files/reimei_no_arcana_chapter_1.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/kuduregasurez.pdf
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/45335016316.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a4c.bin
6da9e67ea85e90f541198f156e15f3c492b2a9c754e268dcacd07366ec6564e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4C 5152 bytes
font_01_sfnt_off00007bd7.bin
32cfc65108ffb4038a866a1cf012c9d6ef120d088a28a62d15baec54ffe1fbc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD7 14024 bytes
font_02_sfnt_off0000a8d5.bin
f830677289c0de581af4a7490886bff5ee23da77fde2619d38ac0c0d627e9f6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D5 18196 bytes

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