Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea709f43435e8d1…

MALICIOUS

PDF

84.4 KB Created: 2021-04-24 12:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 347f35223ea37de7ac123ff80e87fa32 SHA-1: 602790ce7ea03ebc88bc7d0625006547e1727323 SHA-256: bea709f43435e8d17477fdb961411f5b07c90181397bb05376cb686be576de4c
96 Risk Score

Malware Insights

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

The file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a potentially harmful external resource.

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://fokemale.ru/strik?utm_term=best+crossfit+wod+bar PDF link annotation
    • https://tupirusu.weebly.com/uploads/1/3/4/7/134702138/leliwuwi.pdfIn PDF document text
    • https://fawukudaboguris.weebly.com/uploads/1/3/4/3/134353338/8879958.pdfIn PDF document text
    • http://disuxixepere.22web.org/fujolawebirekefonuvu.pdfIn PDF document text
    • http://wogizejelalod.iblogger.org/types_of_descriptive_analysis.pdfIn PDF document text
    • http://wagisate.22web.org/55087118705.pdfIn PDF document text
    • http://rulerezimatot.22web.org/lapakanegeporulijapeg.pdfIn PDF document text
    • http://waxinexedodupij.22web.org/tobulefarururefojagagexo.pdfIn PDF document text
    • http://barivelovone.22web.org/neural_tube_defects.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fufagagebo.epizy.com/19638965300.pdfIn PDF document text
    • http://mebolunene.rf.gd/javascript_game_tutorial_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/36514949340.pdfIn PDF document text
    • http://lofilujajobefi.rf.gd/1917544597.pdfIn PDF document text
    • http://pofavokazaf.rf.gd/85258005352.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/how_to_make_emails_bounce_back_to_sender.pdfIn PDF document text
    • http://wibofupenavoj.rf.gd/should_massage_therapists_wear_masks.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/95527311276.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/maxufafebavuwen.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/chinese_pinyin_to_english.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_off00010cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF9 5264 bytes
SHA-256: f4a89e012ef1dc4cae99e64e0b77747cb9a133610cdfbfe3329b7c5d9cb531fa
font_01_sfnt_off00011f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F07 11100 bytes
SHA-256: 3b2af813932a38c925c78b9ad2fe1f194f62dccc62355c1cc1c9f8f05224a9eb

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