Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ec0c6b0e48bc8f…

MALICIOUS

PDF

44.0 KB Created: 2020-09-10 19:01:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f05fe431576106eb16855111f895f6d SHA-1: 360f6124694915258c045157b04edf14aa85876c SHA-256: 02ec0c6b0e48bc8f7a5cda703d28d4456f50cbf6a1ce7a9149cf30d7897099f2
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are identified as part of a link farm or redirect to malicious infrastructure. The embedded URL 'https://ttraff.club/pify?keyword=checker+java+game' is a critical finding, indicating a redirection to potentially harmful content. The presence of multiple PDF links suggests an attempt to distribute further malicious documents or lead users to phishing sites.

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.club/pify?keyword=checker+java+game
    • http://zunilo.thetsimbalist.com/uploads/1/3/1/6/131606490/dolibedis.pdf
    • http://wimadop.marwanhaddad.com/uploads/1/3/1/3/131382595/5894642.pdf
    • http://files.griffindean.com/uploads/1/3/0/8/130874019/nanaxu.pdf
    • http://files.silvabee.com/uploads/1/3/0/8/130814492/6a1e506c.pdf
    • http://files.movewellmassage.co.uk/uploads/1/3/1/3/131378918/lijixisukosejuledi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/26667204907.pdf
    • https://cdn.shopify.com/s/files/1/0432/2253/2251/files/descargar_biblia_de_estudio_thompson_gratis_en_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0437/6431/8359/files/libro_de_javascript_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3969/files/xokepozevoreda.pdf
    • https://static.usrfiles.com/ugd/b1b3ad_d1fc93d2a30c4408b48af1dd73d8e776.pdf
    • https://static.usrfiles.com/ugd/86319b_849df68369b5415ca960d41ec8be34fa.pdf
    • https://static.usrfiles.com/ugd/cdfdba_236ead27248d45b685a7d1654a00ab46.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_off00006e83.bin
ab86fee68a0deeee347a7ab5f274a7950063c57ac87ad21d4eb0163aab4cb116
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E83 5108 bytes
font_01_sfnt_off00007fc8.bin
c08b56378da441ba9224134ab0d8a31717e41f72b64917588d907fed2e3f5b9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC8 10548 bytes