Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b51966f38100ec…

MALICIOUS

PDF

77.7 KB Created: 2021-03-18 18:59:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 3dc9a3332e512f15c16f21168bd24370 SHA-1: 2fba38ed0b5fe5c5cc2ff5ab90e79d1bb703c7c1 SHA-256: e1b51966f38100ec84aa108604421f8fbdd6807483eb296a61e56e9601f44a97
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 likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially leveraging JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/award?keyword=arms+around+you+piano+pdf PDF link annotation
    • http://pifafixejizigu.scienceontheweb.net/new_techniques_of_wastewater_management.pdfIn PDF document text
    • http://devubowoku.mypressonline.com/42680316953.pdfIn PDF document text
    • http://vobalemujumojak.mywebcommunity.org/functionalism_media_theory.pdfIn PDF document text
    • http://vuwimoxit.mygamesonline.org/59445491981.pdfIn PDF document text
    • http://niwadeg.mywebcommunity.org/expressions_courantes_allemand.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wexukufedepim/equations_and_inequalities_worksheet_algebra_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cf347f2-7e04-45bd-847f-17f5e14f2bc5/51532997796.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/93651732140.pdfIn PDF document text
    • http://gikisomu.epizy.com/onerepublic_start_again_320kbps.pdfIn PDF document text
    • http://pajimej.epizy.com/bullfrog_spa_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e808a89e-3ece-4b48-87b8-d6892588ed99/a_peoples_history_of_the_world_chris_harman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a8fb003-0551-4bdc-b0e5-a54f442e20d8/regamiwokuvemataxasivafe.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/54948607059.pdfIn PDF document text
    • http://xejobutek.onlinewebshop.net/66372375646.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/apeman_a80_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30c7623a-7d7f-4368-bc65-d8c65d03c361/big_little_lies_season_2_episodes_recap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b947cf51-d7f5-4eeb-a2fa-121f0c6893ef/what_is_the_main_message_of_persepolis.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/jiwopameruzakukonufi.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_off0000e42b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42B 4928 bytes
SHA-256: b643f58e1f626558ef1f449b1c340dfd5f3cce472c7c45decf9fddf0d1bafad7
font_01_sfnt_off0000f4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C8 11624 bytes
SHA-256: 555e094282bd441bdfae05b53fa8553088f699e8080fb8fe53131b2bd0de7d8c
font_02_sfnt_off00011c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C96 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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