Malicious PDF — malware analysis report

Static analysis result for SHA-256 c573e503fd5a84c6…

MALICIOUS

PDF

83.9 KB Created: 2021-03-01 20:33:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 14787720302ae77aa52f42783ed8f556 SHA-1: 114db4f7a2ee50b6bc5fd412cf0907d202fb943e SHA-256: c573e503fd5a84c6fecafdf1c43db33cb83428c9d76046423260ce6ae5aceced
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit user interaction, possibly through a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/strik?utm_term=bruno+bettelheim+the+uses+of+enchantment+the+meaning+and+importance+of+fairy+tales PDF link annotation
    • https://cdn.sqhk.co/votezevon/jijhjbh/50232960986.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/idjacih/kemosefediretet.pdfIn PDF document text
    • http://tafugegajotu.mygamesonline.org/kuves.pdfIn PDF document text
    • http://acgmgroup.ru/votuwusoxibuwujoqo4fj.pdfIn PDF document text
    • http://lologunaw.mygamesonline.org/ultimate_mortal_kombat_trilogy_sega_genesis_download_apk.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/5_scale_rating_strongly_agree.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/iidm5lo/69700885522.pdfIn PDF document text
    • http://gixipures.sportsontheweb.net/jack_reacher_300mb_movie_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fapiwejagiz/hfiakwc/school_of_dragons_cheats_online_generator.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vojapu/123_media_player_classic_full_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/larger_catechism.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/torinajizigewafix.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/access_sheets_in_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/saletijugamikujatuz.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/13294029976.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/vezeripamumupa.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/6011148979.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/powerflex_525_configuration_code_mismatch.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_off00010972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10972 5860 bytes
SHA-256: 3d1b5a7d154b4e2040f7884adc65b493dc51a3a2b6de81b97454e96b5115ffe0
font_01_sfnt_off00011d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D43 10616 bytes
SHA-256: 57358508fc427fd6832291014522ef2cace6a16775c3f54a8a9ffbd61bee61c2

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