Malicious PDF — malware analysis report

Static analysis result for SHA-256 2407eeb66069abbe…

MALICIOUS

PDF

81.2 KB Created: 2021-01-12 20:32:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5638a222b1ee1670d408e08625fb7bd8 SHA-1: d2952ae70f41824dc392b0298e6c1f1d66aeaa2e SHA-256: 2407eeb66069abbe7b5a1ecc695cec6a0f9dcdf280cdccd0f61b03e1f4741d1b
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or link farm attack. The document contains numerous external links, including a significant link farm hosted on mozfiles.com, suggesting an attempt to direct users to malicious or deceptive content. The presence of these links and the overall structure indicate a likely spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffine.ru/123?utm_term=futurama+worlds+of+tomorrow+hacked+apk
    • https://site-1184137.mozfiles.com/files/1184137/guvunupezubut.pdf
    • https://site-1173692.mozfiles.com/files/1173692/fepakiru.pdf
    • https://site-1176876.mozfiles.com/files/1176876/prefect_letter_of_application_template.pdf
    • https://cdn-cms.f-static.net/uploads/4379974/normal_5fbdc3f2bd7c1.pdf
    • https://cdn.sqhk.co/fetedudi/4hagfii/vifobes.pdf
    • https://nawajutexi.weebly.com/uploads/1/3/4/1/134108687/simot-fasileregamatap-minimuzo-todabi.pdf
    • https://cdn.sqhk.co/xilelawemu/jjKaihA/diced_chicken_recipes_for_toddlers.pdf
    • https://site-1222105.mozfiles.com/files/1222105/58257115786.pdf
    • https://wilewefat.weebly.com/uploads/1/3/4/2/134234777/9eadef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/nuruvapozixix/country_code_01141.pdf
    • https://s3.amazonaws.com/wivunonovef/nawejatodovexadipek.pdf
    • https://s3.amazonaws.com/kevava/upsc_ias_ka_full_form.pdf
    • https://s3.amazonaws.com/juzowilipi/xukuvopigozikumapelal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f18a.bin
4a23edcc785a5c4f54d14283eeb3161f6a1e58c77406708ea943633df830d348
pdf-font-stream PDF embedded font (sfnt) at offset 0xF18A 5232 bytes
font_01_sfnt_off00010370.bin
cb154515da5ab903b8048f2ef4efe412d0cb55847d9ec13c9fb0f72dbaf4598d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10370 11196 bytes
font_02_sfnt_off0001299a.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x1299A 4324 bytes