Malicious PDF — malware analysis report

Static analysis result for SHA-256 cadaf64437049bad…

MALICIOUS

PDF

62.6 KB Created: 2021-02-17 06:42:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 681a81fff014436fbe6b83dc77e099f4 SHA-1: 27ca877a8c0f4a86a8eb16a9989ee293cb415ff5 SHA-256: cadaf64437049badd7e6b37cf1191baabaae6e04729fad675d50111785c6acf2
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL that directs to a website, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'sportdog collar battery replacement instructions', aiming to trick the user into visiting the malicious URL.

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://leonvi.ru/strik?utm_term=sportdog+collar+battery+replacement+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393019/normal_60104d88aadef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389354/normal_5fc951a0486ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376606/normal_5fec28547de85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382412/normal_5ff68f973a38b.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/buwosevax/32841699770.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/xodojadosigiluzi.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/induction_training_program_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/65800570641.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/antigone_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/vukufedonemujuxo.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/gospel_accompaniment_tracks.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/osrs_bandits_training_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/mepodavitezupepovipi.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/87858645647.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/messenger_lite_app_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/bgt_former_judges.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/39903394218.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/wogezi.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_off0000b52d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB52D 5736 bytes
SHA-256: 83347396adcc04829007abfe6f0ef002b372c3d3b4dba7cffe6ec6193c747742
font_01_sfnt_off0000c8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8A2 10760 bytes
SHA-256: 4e782fbd68104172e696afb0adb2753c0b40ca41d0aff791e3e3c5cb7b45eabe

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