Malicious PDF — malware analysis report

Static analysis result for SHA-256 615e8e5419ff5ca4…

MALICIOUS

PDF

84.5 KB Created: 2021-04-02 12:31:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ff4cbceddd03dffc8948e8e8eb649ed8 SHA-1: 788c4eb46def0a579d8f93c1064be6ea7ddea874 SHA-256: 615e8e5419ff5ca441b3422d0abefe80614d2d0b57b48967bb5c51e65c6e70c4
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, 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 phishing or malware distribution site. The document body, though partially corrupted, suggests a lure related to popular topics, consistent with phishing or social engineering tactics.

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://midufefew.ru/strik?utm_term=why+are+enfps+so+popular PDF link annotation
    • http://importants.space/how_to_thin_paint_for_wagner_sprayerp444j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478141/normal_6009a99348c36.pdfIn PDF document text
    • http://presentinsta.site/19291176063p5uub.pdfIn PDF document text
    • http://axecheat5.xyz/literary_terms_definitions_and_examples6y7ai.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418575/normal_6009ae23089ff.pdfIn PDF document text
    • http://luminar4-download.xyz/modele_de_revendication_naodv40v.pdfIn PDF document text
    • http://epipog.com/dajovopoxepafanexuzejafbuga3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381544/normal_601c9f3d2ba46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462362/normal_5ff191ff1cfd0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485810/normal_5fceddd6743bf.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/padanivozeb/70301563340.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/jury_duty_excuse_letter_template_doctor.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/keith_johnstone_improvisation_and_the_theatre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b58e3ab1-cc8d-43fc-a52c-47d7c43cc236/pusoxodax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceb3ec84-2ca0-4f4f-accf-a30d4346d06b/how_can_i_learn_basic_english_conversation.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/5040897834.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/nokizoraduzasefujepe.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_off00010ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF6 5104 bytes
SHA-256: efed488408927aa94f39c894f7733c852aedf3fe238f6bb9235e46f0a08ae815
font_01_sfnt_off00012162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12162 10492 bytes
SHA-256: b211132d5a7345ac6bbd3f2c81b23930de37c2febfaa0a3c4ba802fae93efec9

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