Malicious PDF — malware analysis report

Static analysis result for SHA-256 246682cc86ba2eea…

MALICIOUS

PDF

72.7 KB Created: 2020-11-12 12:39:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c7f0ac845dd540c4f1215e6719c72ba SHA-1: f07e4cdf076ee5dd34f5f6e7dfdb51f871fe2f3e SHA-256: 246682cc86ba2eea02a84821500d5507a68c6b9d7a143e228018de98c038d2b1
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The PDF contains a large number of external links, indicating a link farm strategy, likely to direct users to phishing or malware hosting sites. The presence of embedded URLs and the overall structure strongly suggest a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=empirical+research+meaning+in+hindi
    • https://paboludozov.weebly.com/uploads/1/3/4/3/134333588/vapanuvuw.pdf
    • https://nenuwuxajifop.weebly.com/uploads/1/3/4/6/134665141/150197.pdf
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/1a27643b41869.pdf
    • https://cdn-cms.f-static.net/uploads/4383340/normal_5f8eb41dc0365.pdf
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/34778606fc468f1.pdf
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5f88bac264fd5.pdf
    • https://madovokego.weebly.com/uploads/1/3/1/4/131409717/5027016.pdf
    • https://rekubiregidejel.weebly.com/uploads/1/3/4/4/134464182/gavavudot.pdf
    • https://cdn-cms.f-static.net/uploads/4374519/normal_5fa2da8b4aee9.pdf
    • https://cdn-cms.f-static.net/uploads/4415739/normal_5f9f82d961ad6.pdf
    • https://sepijoverik.weebly.com/uploads/1/3/4/3/134317252/e0706aa30.pdf
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/323dc9550.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://s3.amazonaws.com/sixenogafopoj/kurosezulemusasazimumit.pdf
    • https://s3.amazonaws.com/susopuzupure/blank_affidavit_form_canada.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_off0000caf1.bin
90ce0c897ed5623afc177c586b4cc9bc37a24cb8e92fd7f29f630e8a4f8dc261
pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF1 5444 bytes
font_01_sfnt_off0000dd45.bin
c2021ae7dd666c1478d5620e95d2af758e4a469f95ee9e19901a2567b6abaa19
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD45 11072 bytes
font_02_sfnt_off0001031f.bin
d6dd525778571238ac5a7823936cac2a5343a2e21607eca8615ac5e93012b8a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x1031F 5136 bytes