Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00e926d9d205f2b…

MALICIOUS

PDF

76.2 KB Created: 2021-05-11 05:36:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 6dfe1b104fc1735dd36c96c568ecbb7c SHA-1: 2ff6db0bf53428e76d213d24aff3316cf1b55a03 SHA-256: c00e926d9d205f2b80f0a26e6657db83e69f4596dace4080b4cb47c85d225d23
146 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many hosted on disposable domains, suggesting a link farm or phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically points to this behavior, and the presence of 'utm_term' parameters in some URLs further supports a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=is+nuclear+deterrence+effective PDF link annotation
    • http://duzixofiwisegi.mygamesonline.org/are_all_the_narnia_movies_on_netflix.pdfIn PDF document text
    • http://wokadokifoxesav.22web.org/pituzuwimipimopiwu.pdfIn PDF document text
    • http://wowovamofuzo.sportsontheweb.net/legarokuta.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/4iiiija/oconee_state_park_georgia.pdfIn PDF document text
    • http://tuzupibu.scienceontheweb.net/bendix_brake_catalogue.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/pSsgdli/videofx_music_video_maker_online.pdfIn PDF document text
    • http://tudiweva.22web.org/willy_wonka_and_the_chocolate_factory_cast_now.pdfIn PDF document text
    • https://cdn.sqhk.co/gadowikuxe/X7Lijif/marathi_calendar_2019_apk.pdfIn PDF document text
    • http://zomixuxoluzijum.mywebcommunity.org/dixosi.pdfIn PDF document text
    • https://cdn.sqhk.co/waxigapo/dwjigjl/pottery_designs_painting.pdfIn PDF document text
    • http://paxulujomem.iblogger.org/89387933326.pdfIn PDF document text
    • http://vepapin.iblogger.org/senumox.pdfIn PDF document text
    • https://cdn.sqhk.co/nitagalut/iiO1zjj/qr_code_scanner_iphone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fusozevukatamir.atwebpages.com/gutebavene.pdfIn PDF document text
    • http://xonafalapon.epizy.com/1539431510.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/skilsaw_5380_blade_lock.pdfIn PDF document text
    • http://bubalafugevale.rf.gd/kidevinu.pdfIn PDF document text
    • http://ratuvilus.epizy.com/nakefedipedatele.pdfIn PDF document text
    • http://zipemoluligera.myartsonline.com/lutuzajajuzazageveji.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/photo_collage_app_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/lumuwek.pdfIn PDF document text
    • http://molugafew.epizy.com/kafugikekerajuposi.pdfIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/pemudofuvelopejug.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/5399085754.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_off0000ec10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC10 5012 bytes
SHA-256: 35d2f67000e75bda28c5dec02abe26c79ad3b7a2c7da802d5e26d0a9e5a84741
font_01_sfnt_off0000fd33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD33 11068 bytes
SHA-256: 3accd48ac3666b20fc59a7e5733a66f6b2dbec0a6ac6c95430e04ccf8fa37c94

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