Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8a2b111e7ff4dc5…

MALICIOUS

PDF

79.4 KB Created: 2021-03-31 07:12:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 27376f3ceea8a54a132a85926f5d4b2a SHA-1: 105dc219854be14c08a503945d4060b684c0b78f SHA-256: c8a2b111e7ff4dc5d4b524af0577a188c528d72b3ebf85c807b8753696d1c07b
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 0.9954

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://jottigo.ru/123?utm_term=formal+email+writing+prompts PDF link annotation
    • https://cdn.sqhk.co/tedubifo/dQvDCid/90427620349.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414353/normal_6013d84855eac.pdfIn PDF document text
    • https://cdn.sqhk.co/joxufejod/Qhigg6j/movie_quiz_questions_multiple_choice.pdfIn PDF document text
    • https://cdn.sqhk.co/sovixojer/dvzjBib/muxan.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/1GggWQH/digital_dc_ampere_meter_circuit.pdfIn PDF document text
    • https://cdn.sqhk.co/ponajadu/gurZRlt/download_death_worm_free_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/aYSibhb/pandemic_unemployment_assistance_florida_amount.pdfIn PDF document text
    • https://cdn.sqhk.co/kososojog/jbhaCc7/wiwasosomaxokuji.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/ZMIiaje/ornl_fcu_mobile_app.pdfIn PDF document text
    • https://cdn.sqhk.co/libobivole/mhfiaje/jalexak.pdfIn PDF document text
    • https://cdn.sqhk.co/vafodagusun/ujjhiU8/wedanexikupukozuzen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480382/normal_601b0cb3b03ac.pdfIn PDF document text
    • https://cdn.sqhk.co/repipedifavi/OaTChjD/voice_recorder_app_download_android.pdfIn PDF document text
    • https://cdn.sqhk.co/kidatufo/4uickge/80359414761.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474462/normal_5fcf09b7ea673.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/gj4fhBV/36180360171.pdfIn PDF document text
    • https://cdn.sqhk.co/bexoninodag/iboxgcV/61888217213.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/pipaneku/jidubiwifanelisu.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/56870585968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c93d6c85-f6e8-42e3-acb1-0506e76ed35c/kitchenaid_ksmctier_fitted_stand_mixer_cover_empire_red.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/93851420896.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1de2048a-7e98-42f5-a1fe-c13b07d03227/1990_chevy_p30_step_van_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34fc5b26-e181-437d-8e32-c75a1b566a31/28012344008.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/bed_sheet_sets_clearance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daf31220-6edd-4fbe-9b53-42af96414a91/71978137396.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/73260320698.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_off0000ede6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE6 4976 bytes
SHA-256: c0ce4820bcbe4077b8ff0da4188b98c6ebbfc641c1a107b5e45250582bc58485
font_01_sfnt_off0000fec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC0 10292 bytes
SHA-256: 8e311f768e02c2e8a82f4b1bd723d6fa2a36b6472f1d835301a5a240dd289dd1
font_02_sfnt_off000121ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121FF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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