Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8cc697038963d22…

MALICIOUS

PDF

81.7 KB Created: 2021-05-05 16:31:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c38dd53df4c8c701d9ce15d7091fed0f SHA-1: 11daa8c9fc926bce1a1c2de476266ab8e1ae0ede SHA-256: c8cc697038963d22c4bfc495a2f5908f848c0a76f4ae0b6134c29a325003abef
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://leonvi.ru/strik?utm_term=best+short+novels+for+high+school+students PDF link annotation
    • http://businesslinecenter.com/balance_general_proformae6yu6.pdfIn PDF document text
    • http://moxokivotalunuz.iblogger.org/abstraction_in_java_with_example_programs.pdfIn PDF document text
    • http://koteyarn.moscow/hack_game_defender_3_tren_androidykfkw.pdfIn PDF document text
    • http://ergors.space/mascarpone_icing_recipe_for_carrot_cake04o6x.pdfIn PDF document text
    • http://dominis.xyz/15797493973ucb.pdfIn PDF document text
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/merisanuz-volepe-tibimofaguwetuz-wamulolurezez.pdfIn PDF document text
    • https://tibomomaludo.weebly.com/uploads/1/3/0/9/130969572/3797797.pdfIn PDF document text
    • https://gabodubelekopo.weebly.com/uploads/1/3/4/3/134356924/2826144.pdfIn PDF document text
    • https://rasetakewalufil.weebly.com/uploads/1/3/6/0/136086978/kexumezabeguzefep.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/dinisemowoge/gta_san_andreas_all_cheats_app.pdfIn PDF document text
    • http://mepogevotu.epizy.com/homophones_homographs_worksheets.pdfIn PDF document text
    • https://91506351-5699-48ce-85e7-8e7d071f4e87.filesusr.com/ugd/d775a9_3c9a88af9b104cf7aafa521bc7742bfb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/abarcar_definicion_informatica.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/vufatopisapaboge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ae4aed7-1c7c-4b2f-8f4b-d55703c2d372/57377772648.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2065c7ff-c9ed-4a81-9a38-44fd19b64d00/used_hpi_baja_5b_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c23f0b06-1c95-4415-ba08-62e675bcc249/wewomim.pdfIn PDF document text
    • http://katemezutam.rf.gd/troubleshooting_simpson_pressure_washer_pump.pdfIn PDF document text
    • https://d99c26cc-8c68-456d-a039-1a26994c8d26.filesusr.com/ugd/105a8c_406da35a96e54318bcf447368c14f22d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/faxaxos/34851990028.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/juxujilolibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6dd7ea-deb2-45a1-8c05-8d359a800334/64383242174.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bc1fa36-c35a-4b50-818b-41b1478afd0d/stephen_king_outsider_book_ending.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_off0000f510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF510 5064 bytes
SHA-256: 9f922e4e1b556f9c96f848135acf34a1eaf95d58c66d553428a2b638e2aad944
font_01_sfnt_off0001064f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064F 10292 bytes
SHA-256: ee9665e6f552b22920b75c5842ce9e6eab56b2f45796ac2002a023d90d0b6aee
font_02_sfnt_off00012982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12982 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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