Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae43d0ff0961ae4…

MALICIOUS

PDF

37.8 KB Created: 2020-08-26 01:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1ad4d716acb8d54856ef2470ff57e39 SHA-1: fb6567989151157735e0fcf0b4bcc83531e39c26 SHA-256: 0ae43d0ff0961ae432d414d93258fcba490d8c53083a4c29f4518333ead6531d
154 Risk Score

Malware Insights

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

This PDF document was flagged by multiple critical heuristics for linking to malicious redirector infrastructure and for being part of a link farm. The embedded links, including the reconstructed URL 'https://ttraff.cc/pify?keyword=tom+and+jerry+baby+puss+full+episode', are designed to direct users to potentially harmful content. The document's structure suggests an attempt to manipulate search engine results or distribute malware through a large number of external links.

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=tom+and+jerry+baby+puss+full+episode
    • http://dazum.oldschoolgarden.com/uploads/1/3/1/4/131438539/naniv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xefafozerokadugatevaru.pdf
    • https://cdn.shopify.com/s/files/1/0434/8982/0836/files/dutowimakutibav.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/kutanoti.pdf
    • https://cdn.shopify.com/s/files/1/0438/2097/4242/files/7607699697.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdf
    • https://cdn.shopify.com/s/files/1/0440/9524/2392/files/21683664180.pdf
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/interbridge_lineups_date.pdf
    • https://cdn.shopify.com/s/files/1/0437/7441/0910/files/sezesawojakukedepuwoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/12795103948.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_off000055b3.bin
20f7c05ba4714c673133c9fa8cda5c85ba1a307c438f0a0aadbffb6d424dcccd
pdf-font-stream PDF embedded font (sfnt) at offset 0x55B3 5452 bytes
font_01_sfnt_off00006827.bin
faf79867b32f40aed85c7f62dbf9bcce4f02bb2538f107fe79789d03f1e54f33
pdf-font-stream PDF embedded font (sfnt) at offset 0x6827 10060 bytes