Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68fa07c74a41215…

MALICIOUS

PDF

75.7 KB Created: 2021-03-29 13:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: ca8481a187a3c2115f8023e870fe57f9 SHA-1: 1e8c14ea6c9afad0635de046a4c15d78cb462522 SHA-256: b68fa07c74a41215fc22dc109a3d8b8c6abded5b78434d1f3c9855467eebfc63
104 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a URL that impersonates a Hyundai service manual, likely as a lure for phishing or malware distribution. ClamAV detected this file as Pdf.Phishing.Trojan, and the ML classifier also flagged it as malicious. No scripts were extracted, but the presence of external URIs and the phishing lure suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://vilenefex.ru/wix?keyword=hyundai+service+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/kokowoxiwi/pgggdt7/trust_crypto_wallet_download_for_pc.pdfIn PDF document text
    • http://jakiduve.scienceontheweb.net/5139549092.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/Sjfia0F/17435614915.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/gif60ii/easy_to_use_cnc_router_software.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450034/normal_603e381c99503.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464539/normal_5ff091e3803a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380674/normal_600a924e842cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473039/normal_6005fd158b66a.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/07282907-2106-4623-b89e-75715b8bcaf2/76929673197.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/78624423376.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/gummy_remember_me_piano_sheet.pdfIn PDF document text
    • http://dazimosanugep.epizy.com/alu_full_form_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/why_you_use_nmap.pdfIn PDF document text
    • http://mufozugiro.rf.gd/black_hole_theory_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fffac36-229a-4fe9-887f-088cd6b57e83/how_to_get_tqm_certification.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/acer_gaming_laptop_price_philippines_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/holt_mcdougal_algebra_1_worksheet_answer_key.pdfIn PDF document text
    • http://korobuvorudetiv.rf.gd/vonasibiguxawosodek.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_off0000ea79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA79 5424 bytes
SHA-256: ecba2b1a339ee4aa0ac0e5347f8520a4cfe6e317e3e2128c33c3c87ffdeea064
font_01_sfnt_off0000fce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE2 10384 bytes
SHA-256: 4648ede98b73a4164a0e8e9c5432c13360433b1d41fa575150d2491accea23f8

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