Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a14b397e8372a9d…

MALICIOUS

PDF

74.0 KB Created: 2021-03-22 14:28:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67ad3670343651c9cbca53d80d1212d5 SHA-1: e71d5748117c8379fe784f6677e2c20f02948d25 SHA-256: 9a14b397e8372a9d55935d2eaa2c9670887f53860ab86f867c91726d7b34092d
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, with the primary one being https://bologen.ru/wix?keyword=ordering+real+numbers+worksheet+answers, suggesting a phishing lure disguised as a worksheet answer key. Although no scripts were explicitly extracted, the PDF structure and embedded URIs indicate an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=ordering+real+numbers+worksheet+answers
    • http://alkim.xyz/dd_3.5_monster_manual_5k4crd.pdf
    • http://tamogulaganero.scienceontheweb.net/82812130375.pdf
    • http://loziwazekon.medianewsonline.com/25021420920.pdf
    • http://help-copyrighteamservice.com/xufuruzelusinufawirobukadhmbn4.pdf
    • http://matras-24.ru/bawafodutujfj2l5.pdf
    • https://worudunomazife.weebly.com/uploads/1/3/1/4/131483266/xatabewomabisagi.pdf
    • https://vuveporejar.weebly.com/uploads/1/3/2/6/132695394/8858303.pdf
    • https://ruxikikigiligex.weebly.com/uploads/1/3/4/3/134347308/f637ff139.pdf
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/d37ec2a95.pdf
    • http://mybiol.site/92520171261idlzo.pdf
    • https://nivojekegup.weebly.com/uploads/1/3/5/3/135322075/8608582.pdf
    • https://nakupibizotan.weebly.com/uploads/1/3/4/7/134730769/foganalulufidude.pdf
    • https://bonivodetago.weebly.com/uploads/1/3/4/5/134517527/nabetup.pdf
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/d7538f079.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://xabudavadeguvo.myartsonline.com/bowflex_blaze_exercises.pdf
    • http://zipupetaseze.epizy.com/32366894624.pdf
    • https://uploads.strikinglycdn.com/files/fb4258b9-c2d4-48fb-8f11-b55834915f40/joruditedu.pdf
    • https://uploads.strikinglycdn.com/files/411f9f0b-60d6-4120-8ee2-31e22b244888/atlas_lathe_for_sale_uk.pdf
    • http://zexaxoneda.epizy.com/comment_couper_une_page_en_2.pdf
    • http://vafatosiwajufo.epizy.com/19305636036.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_off0000d26c.bin
a2bc6a42a0bf7b79aeb2472f761c80b732f357424bf80ef4996fa9b30442c768		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD26C 5444 bytes
font_01_sfnt_off0000e4c9.bin
742c443e6e04619fae8b550162f3716739c74ce121ccdb644596009180d1451d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C9 11140 bytes
font_02_sfnt_off00010ab6.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB6 4324 bytes

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