Malicious PDF — malware analysis report

Static analysis result for SHA-256 4632f57d30384bb8…

MALICIOUS

PDF

49.1 KB Created: 2020-08-15 00:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2da8b75169296172b8698ece9792a842 SHA-1: dd19c2eea94d3f4f54b3e3bc9fecdc041a8bad54 SHA-256: 4632f57d30384bb878be2282f0929d337c50fca03d9f72643a33754299aa3006
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=apocalypto+full+tamil+dubbed+movie'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into visiting a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or distributing malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=apocalypto+full+tamil+dubbed+movie
    • http://files.balibidadaritours.com/uploads/1/3/2/6/132682553/matojezolojobok.pdf
    • https://cdn.shopify.com/s/files/1/0438/7222/3387/files/beekeeping_for_dummies_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0440/0336/0926/files/dusexojanatolix.pdf
    • https://cdn.shopify.com/s/files/1/0431/7406/8390/files/72122526539.pdf
    • https://cdn.shopify.com/s/files/1/0452/0011/3813/files/35140776339.pdf
    • https://cdn.shopify.com/s/files/1/0454/2916/2152/files/whatsapp_for_computer_system.pdf
    • https://cdn.shopify.com/s/files/1/0437/7195/3301/files/38547229918.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/telemijuwepujewabowaf.pdf
    • https://cdn.shopify.com/s/files/1/0439/1718/1083/files/how_to_update_node_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/areas_of_artificial_intelligence.pdf
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/20254122593.pdf
    • https://cdn.shopify.com/s/files/1/0428/6640/9639/files/dojagoxonijilumo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a96.bin
98529f8c847989fdfd10851df3e9a2c112caceb85259bb254c0f2bcdba585643		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A96 5320 bytes
font_01_sfnt_off00006c96.bin
ea93c3dd8ef39c571775962d567dbb11266961f7469d4a7ea57976db2bfdec75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C96 5920 bytes
font_02_sfnt_off00007ba6.bin
e3c12bb096af695868d07d06bfafb8c1e8d78416aa054da79b2161bd60b63156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA6 10516 bytes
font_03_sfnt_off00009fe6.bin
7ed423fd6f64a2accaab24a388a557cab9318e50e2ef4475c53ca1e35efe0f17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE6 16632 bytes

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