Malicious PDF — malware analysis report

Static analysis result for SHA-256 98e966b0a92ab0dc…

MALICIOUS

PDF

85.7 KB Created: 2021-02-14 10:46:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b22bdf4d0c1ed07c2989c94c1deba6a6 SHA-1: 97d438389a6c3242770b3e7515af53ea739e007c SHA-256: 98e966b0a92ab0dc7812815b1ddd46acfe238988ccd5f6b9a28d651f0a43d2d8
96 Risk Score

Malware Insights

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

The sample is a PDF file detected as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external links strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://jacksth.ru/wix?keyword=amor+eterno+univision+cast
    • http://triple-doska3.club/house_craft_explore_dreamsc55x5.pdf
    • https://cdn-cms.f-static.net/uploads/4489838/normal_600c872ce62e6.pdf
    • https://cdn.sqhk.co/pirujezexod/hjge2jg/wazexujisuxinuk.pdf
    • http://freedate18.xyz/pixel_car_racer_tuner_kitu7drt.pdf
    • https://cdn-cms.f-static.net/uploads/4412607/normal_600a8fc115ff4.pdf
    • http://becloud.website/xanaredozsy8q.pdf
    • http://copyright-notice-ig.com/51079127905esgh.pdf
    • https://cdn.sqhk.co/zekafomaze/XbiaheY/murevon.pdf
    • http://sexugaweguko.iblogger.org/social_media_calendar_excel_template_2019.pdf
    • https://cdn.sqhk.co/zofagopipowi/6Ggfaja/electronic_musician_magazine_subscription.pdf
    • http://nikaold.site/sejafabejufosizurawivade8nf.pdf
    • http://repair-foto.ru/spider_boy_full_movie7ddnh.pdf
    • http://thecet.xyz/34049749143b6jwx.pdf
    • http://savadaqwe.space/ged_science_study_guide7pxyi.pdf
    • http://drenajkrasnodar.ru/77715768977iyibp.pdf
    • https://cdn.sqhk.co/zaweniwefi/geVhclD/homeschool_activities_in_charlotte_nc.pdf
    • http://ing-jobs-opportunities.com/32173910602jegi9.pdf
    • https://cdn-cms.f-static.net/uploads/4365591/normal_6028641849aa4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jiporiri.rf.gd/plant_genetic_engineering_book.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_off000114ef.bin
12d8467f32385555766e8abf293135489bdc7390ef6bbb1a93135bc338ad444b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114EF 4964 bytes
font_01_sfnt_off000125c0.bin
109508ef60e3c93794cd72a131bec9f1d284e84dcd87dac3bb34598925804922		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125C0 10488 bytes

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