Malicious PDF — malware analysis report

Static analysis result for SHA-256 60cd49de476ec4d0…

MALICIOUS

PDF

82.1 KB Created: 2021-03-20 23:31:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5553bf87082aac6c36b1d544fa582cf SHA-1: 4685441eba05b73d5cb4aa20a195e0ec3c1de3fd SHA-256: 60cd49de476ec4d0cfa4bbc2db858a8dc79626838ca224addbdc9b2bd41947f7
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL that appears to be part of a phishing lure, disguised as a 'caregiver burnout quiz'. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/award?keyword=caregiver+burnout+quiz+pdf
    • http://saluzoz.iblogger.org/europe_aging_report.pdf
    • https://cdn.sqhk.co/wozejodes/agRXvaf/kiss_status_video_download_for_whatsapp_free_mirchi.pdf
    • http://ruwazumusef.scienceontheweb.net/80586116570.pdf
    • http://bagerisevi.scienceontheweb.net/how_to_find_z_percentile.pdf
    • https://cdn.sqhk.co/savunowudob/1hgiggc/santorini_fira_hotels_with_private_pool.pdf
    • https://cdn.sqhk.co/pafevola/ihQje0l/hockey_meaning_and_synonyms_of_eminent.pdf
    • https://cdn.sqhk.co/pisapaxosabo/CIgetje/gamoxaxepamuvabo.pdf
    • http://mitutepoka.medianewsonline.com/math_anxiety_test.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zokitidekav.epizy.com/38333690679.pdf
    • https://s3.amazonaws.com/pavujiniz/7182044584.pdf
    • https://s3.amazonaws.com/pogolo/autocad_2007_with_crack.pdf
    • http://jezevenakos.myartsonline.com/autonomous_vehicles_research.pdf
    • http://sabuxixu.epizy.com/wumujefugipagilutewazu.pdf
    • https://s3.amazonaws.com/dejazuvorira/55772969863.pdf
    • http://dojidusajotat.epizy.com/afcon_2019_last_16_format.pdf
    • http://kemaduxisi.epizy.com/manual_of_veterinary_echocardiography.pdf
    • http://jenuvuzawo.epizy.com/acog_pap_guidelines_algorithm_2018.pdf
    • http://rerexewiruved.epizy.com/86697450209.pdf
    • http://vizepojuduw.rf.gd/zugexutoxezamapex.pdf
    • http://rabewifawilowe.epizy.com/curso_de_ingles_gratuito.pdf
    • https://s3.amazonaws.com/nitirew/9850634865.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_off0000f76d.bin
ba6106f8a8af09d24ce1878d94e7032b0e098ebdfc0d8bfade7e60434ef03201
pdf-font-stream PDF embedded font (sfnt) at offset 0xF76D 5280 bytes
font_01_sfnt_off00010976.bin
4e904ab8ffe99a9966cc21a1a8e0d31e761c61da82c50f63b5ee421ca9f3bfeb
pdf-font-stream PDF embedded font (sfnt) at offset 0x10976 10356 bytes
font_02_sfnt_off00012cd9.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD9 4324 bytes