Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ac7c7be2ec0cd01…

MALICIOUS

PDF

75.3 KB Created: 2021-02-25 13:58:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 14188fdfbe01c41f0a79d94d5b5e2fdb SHA-1: 553ad86c69a56fd97013cbe7bac7f62010ee72ae SHA-256: 8ac7c7be2ec0cd012de5985706c6fd90df96c87bb013099288ecb031b6b69d44
96 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, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'druttle.ru', which is likely used for phishing or malware distribution. The document body, though truncated and containing non-readable characters, includes a reference to 'who are the witches in the crucible', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=who+are+the+witches+in+the+crucible PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485010/normal_600620f89697f.pdfIn PDF document text
    • https://diwowure.weebly.com/uploads/1/3/4/5/134592565/bawov_zegulifo_xozakigaparij.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/p4xjhLH/15426142408.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457312/normal_5ffa5ae075044.pdfIn PDF document text
    • http://dodemul.mygamesonline.org/6021944815.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/63021708957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452171/normal_5fd8764bb0381.pdfIn PDF document text
    • https://babanude.weebly.com/uploads/1/3/4/0/134017813/2784796.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380682/normal_5fcf3fbf03bf3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiwatimab.atwebpages.com/pajemenaf.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/xizasipikonivoronanidak.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/15393390103.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/atkins_physical_chemistry_student_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/overleaf_beamer_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/24064339982.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/how_to_remove_adt_panel_from_wall.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_off0000ea4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4B 5132 bytes
SHA-256: 7038ac84e7061515bad99a2f545e68814065c62aabb2ddb100ee6524516f7e78
font_01_sfnt_off0000fbd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD4 10676 bytes
SHA-256: 1630e4cc7a42b24bb21e2c9756ab5de94e04538284f1e53a846becb01a2ade37

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