Malicious PDF — malware analysis report

Static analysis result for SHA-256 683aa46d028436c1…

MALICIOUS

PDF

78.0 KB Created: 2021-03-17 02:53:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9a1153cb5d21563b2077b7538367e156 SHA-1: 9cc68363c5d8b9b05186fb71c58a0a0584d9f905 SHA-256: 683aa46d028436c10cbad7f4e980e9ae66d7d4ad1688d1a3a165974d1ccd2f4e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. While no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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://soxebez.ru/strik?utm_term=the+game+of+thrones+cast+season+3 PDF link annotation
    • http://digtalcaliper09.xyz/pulimaxifibaribusuzsfi9.pdfIn PDF document text
    • http://polnews.xyz/zombie_road_trip_hack8qnm4.pdfIn PDF document text
    • https://cdn.sqhk.co/makulowujip/jOejbOp/43344085774.pdfIn PDF document text
    • http://best-store.club/matepracticas_ejercicios_matematicos59a05.pdfIn PDF document text
    • https://cdn.sqhk.co/wubofuse/sUdfihK/pifalavenunuzaja.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/fmftidI/kukobewidi.pdfIn PDF document text
    • http://varnisvakq.ru/wefepavjqezn.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeforms.com/najudekegevirulidkf36z.pdfIn PDF document text
    • http://intekzafast.online/sea_battle_2t3oio.pdfIn PDF document text
    • https://cdn.sqhk.co/wutalididow/0TuP5Gl/6348342685.pdfIn PDF document text
    • http://fartook.online/mustang_cobra_iphone_wallpaperyl4lz.pdfIn PDF document text
    • https://cdn.sqhk.co/gumojitoxowu/Mjdie7x/dell_5490_datasheet.pdfIn PDF document text
    • http://lozavisimas.22web.org/kaparinimisetumomapuxavi.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/mogipegi/font_aquiline_two.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/how_to_install_defiant_timer.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/cauliflower_pizza_nutrition_information.pdfIn PDF document text
    • http://vikaxala.epizy.com/bhagavatam_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/phonic_sounds_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/boss_baby_2_tamil_dubbed_movie.pdfIn PDF document text
    • http://lesefapor.epizy.com/blessings_laura_story_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/58101037822.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/6536201081.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/gideke.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/korean_for_beginners.pdfIn PDF document text
    • http://nuworeri.epizy.com/libro_amleto_shakespeare.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF305 5376 bytes
SHA-256: e23b8ba5d731a321f5f5635bf4226d9920409beb14d78d157196e52412fdae8e
font_01_sfnt_off0001052f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052F 11028 bytes
SHA-256: 9ef4e756df61f216b34fc190db942cfa5784795c1c7b3396d43e961e5d52fb38

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