Malicious PDF — malware analysis report

Static analysis result for SHA-256 f303bfae7d5e6bcf…

MALICIOUS

PDF

76.1 KB Created: 2021-03-21 22:24:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 6192a748d1beb0891cc232cc9a8a3a71 SHA-1: 43043ca56e8ae66ed7a5ee2fdcce3413ea92f91d SHA-256: f303bfae7d5e6bcff25e99be1a3c1fe2ea02be167c8e6c7104def72783c9fa76
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'dugedepap.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into visiting a compromised 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://dugedepap.ru/award?keyword=cracking+the+toefl+ibt+2020+pdf PDF link annotation
    • https://cdn.sqhk.co/xasurila/fyaigK5/f1_mobile_racing_2020_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/jukowejazus/f194T3h/warlord_tft_spatula.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389376/normal_5fce6b9519947.pdfIn PDF document text
    • http://begemot.space/30601330361qeuoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471683/normal_601f0d178ecf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418747/normal_603bb92fcfe7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471252/normal_603c6a6d6c656.pdfIn PDF document text
    • http://barbanapoli.moscow/979465886012nnil.pdfIn PDF document text
    • https://cdn.sqhk.co/tawibonikigo/5kifi3P/9109966958.pdfIn PDF document text
    • http://afracheat6.xyz/ryobi_router_table_base_plateolw4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451561/normal_5fd0d3c66295f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_6052fb8ae627a.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/leributafa/63889903437.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/test_de_inteligencias_multiples_psicologia_online.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/kewibowilodawenadibosapen.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/2014_maserati_quattroporte_s_0-60.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/voxotuzapo.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_off0000e3f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F6 5624 bytes
SHA-256: 4b89d1f7391e59b64ab565758d69b4a7412c73c0995f7d19e33045166f282c4d
font_01_sfnt_off0000f70c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70C 14176 bytes
SHA-256: 2b551652b700e02076df78e860fb6b66e40246de93e7e34ed22d4df60d30dbd8

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