Malicious PDF — malware analysis report

Static analysis result for SHA-256 d52bfbe30a8c1505…

MALICIOUS

PDF

78.6 KB Created: 2021-03-01 23:32:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 7a02b45c9889bb5e88b45eb2f4a33d56 SHA-1: bf749039262bedd37aaf5470db2a2ff1fe9cdfad SHA-256: d52bfbe30a8c1505e3042147e78b8d00c362262d96f49d19070f5245099e4bc8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to a search query, and an external URI points to a URL that appears to be part of a phishing or malware distribution scheme. The presence of embedded URLs and the overall structure suggest this PDF is designed to trick users into visiting a malicious site.

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://ponafet.ru/strik?utm_term=how+do+you+remove+a+badger+garbage+disposal PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391611/normal_5fd6fb7557ac6.pdfIn PDF document text
    • http://fortuneo-enligne.com/john_deere_mower_blades_reverse_threadxlp4p.pdfIn PDF document text
    • http://blu-ital.space/braehead_primary_school_ayr_uniformysfk9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417023/normal_5fd322d435d4d.pdfIn PDF document text
    • http://abzac.me/64781239349hdjkv.pdfIn PDF document text
    • http://toxaxugepevu.iblogger.org/54200449693.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/vokol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379034/normal_5ff9e1e83d396.pdfIn PDF document text
    • http://onlyforyou.space/roadmaster_bike_womens_walmartz23mp.pdfIn PDF document text
    • http://wiwalubezit.22web.org/fantasy_world_building_template.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/suxiweke/vaxukexowiziwajeso.pdfIn PDF document text
    • http://vesazunexupeva.epizy.com/45110217461.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/widal_test_report_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/printable_heart_template_free.pdfIn PDF document text
    • http://nagofubufi.epizy.com/conover_wisconsin_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/english_editing_and_omission_exercises_with_answers.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_off0000f60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60F 5636 bytes
SHA-256: 2b3b5f1d8238eb21c1513002c7278c10c9f77c48be96b1b20ca2327683a9af8c
font_01_sfnt_off00010932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10932 10376 bytes
SHA-256: 706e613efb0b427514f21685c5ce37d76e366bc2e84f666c60b74e3c140b00eb

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