Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcac86cd0ac90d6…

MALICIOUS

PDF

95.9 KB Created: 2021-05-20 14:10:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0808e260217c79c076e2001378473730 SHA-1: 58ec6bdefffb6683cea2697551ad0c56b50e31a2 SHA-256: 2bcac86cd0ac90d68712220d7c66adcf08c3a5e87942e9a36e650fd34db3cfa7
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://jacksth.ru/strik?utm_term=ap+biology+cellular+respiration+virtual+lab+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369487/normal_603c06e9b5670.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_60215be5c33fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_602cfe337c43d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374520/normal_600b5e49bb045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_605aa6a6f3ead.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369501/normal_601e567c7a2dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387807/normal_601d764238e4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476146/normal_605c910458f4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462093/normal_5ff8b5c5df246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_603807b92205d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386330/normal_6064def4b6fa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425009/normal_602c9fbfc07a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373504/normal_5fd9cd57d3967.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa5e1e0b-616a-4884-84e3-8d070ab3d7f3/gcv160_oil_change.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/91388683069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f13898a7-ff55-487c-84be-dd0d14171da8/are_portable_pressure_washers_any_good.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e0c1df-6e53-4e76-a7a0-97dc84cc0543/45597345132.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/how_to_reset_adaptive_headlights_bmw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf2aa385-d6ff-43a3-8f51-3246a4dd669d/no_fear_shakespeare_twelfth_night_act_2_scene_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/125ce573-4b9a-4579-9466-a75a1b464f71/how_did_the_stock_market_crash_contribute_to_the_great_depression_quizlet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feb1c58a-0822-4a02-8cc8-a1dd7677c334/history_of_quran_in_urdu.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/one_less_bell_to_answer_glee_episode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baf0f0d5-c5c6-494a-b65f-babe7fedd303/the_scalpel_and_the_silver_bear_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ece7f90-ed06-4c64-8c05-0c6f6c923ee9/style_for_dummies_meaning_in_tamil.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_off0001394c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1394C 5484 bytes
SHA-256: 283b470c26f70f58ef74983b48bab93f2578d7553a8c9eb4f128b8dfe0643012
font_01_sfnt_off00014c1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C1F 11076 bytes
SHA-256: 2a00a3e0d686405097bd2628b3c7506f974de65ac186e68f2648e403a619789c

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