Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9006b2918259722…

MALICIOUS

PDF

101.0 KB Created: 2021-02-16 10:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b6c1154990521c515dd4241d0a302c77 SHA-1: 219450b82a5244c28f937c8bb1d354343fb28454 SHA-256: b9006b2918259722924d8e4ace5462df0696ccc00def5b63eecfe18a9e399dce
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL leading to 'jacksth.ru' which is associated with a search term for car prices, suggesting a phishing lure. The PDF's structure and the presence of multiple external links indicate it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/strik?utm_term=toyota+camry+2018+price+in+pakistan PDF link annotation
    • https://pebawozo.weebly.com/uploads/1/3/4/8/134865175/9d592ef698c1.pdfIn PDF document text
    • http://good-production11.site/12671534158udz23.pdfIn PDF document text
    • http://inostrana.com/50172736968cq9eo.pdfIn PDF document text
    • http://braco.ru/guess_men_s_cologne_seductivev3ep1.pdfIn PDF document text
    • http://minuduw.22web.org/51165144603.pdfIn PDF document text
    • http://heartcenteredequestrian.com/check_writing_worksheetsgxop5.pdfIn PDF document text
    • http://thechambre.xyz/invitation_templates_baby_shower9rajt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/jazasukitubilofu.pdfIn PDF document text
    • http://xamunenefo.rf.gd/rusimojipatumikoz.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/contemplated_translation_tagalog.pdfIn PDF document text
    • http://dipuritaxuxok.rf.gd/wondershare_video_converter_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/voxumixupizadaf.pdfIn PDF document text
    • http://zasegusof.epizy.com/xamigu.pdfIn PDF document text
    • http://zujuketa.rf.gd/deep_sleep_guided_meditation_hypnosis.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14052 3028 bytes
SHA-256: 2a58cb912b8d0b1d3a8ee7d96a3f8aada0dafd9b4c12bd836ff2d33ab9786c1c
font_01_sfnt_off00014b2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B2F 5684 bytes
SHA-256: 6eb0aa5ce1a6d7a78a2aa56f3f15aaca897ae0cd0b9fd1011485f235c25f5e07
font_02_sfnt_off00015e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E7C 12532 bytes
SHA-256: d3076607486b2a02477940438f07bbb31078e86bdb8cf3f4a3b83a1508c1a71f

Open this report in the interactive analyzer, or submit your own file for analysis.