Malicious PDF — malware analysis report

Static analysis result for SHA-256 09cd7a9a30e5006e…

MALICIOUS

PDF

70.2 KB Created: 2021-02-10 14:22:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 2fec322583d6c0bf1969f5960ba69313 SHA-1: 52af626c5602f37cd18ea2d097aed2ffde7856ef SHA-256: 09cd7a9a30e5006ea301dbf59182a5d46d5342fa638263b761622791e511fb70
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to 'https://maypoin.ru/123?utm_term=osrs+fire+giant+cannon+guide', which is likely a phishing or malware distribution URL. The document body is heavily obfuscated, but the presence of the malicious URL and the high risk score indicate a malicious intent.

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://maypoin.ru/123?utm_term=osrs+fire+giant+cannon+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379605/normal_5fded945ec7c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415767/normal_5fe892bceed64.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466379/normal_5fe288747bdb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448116/normal_60080a1781307.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450147/normal_5fe43a9c7f2c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367635/normal_5feaf9d2dc49b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486552/normal_6020884c79d1d.pdfIn PDF document text
    • https://xobijuveja.weebly.com/uploads/1/3/1/6/131606615/389789.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451930/normal_5fff5a7fec359.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391047/normal_5fefb290a8086.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/tokatefozude/titiroxubeko.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/international_badminton_rules.pdfIn PDF document text
    • http://vilujemes.rf.gd/kuzanutejogiwizugobima.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/4236952622.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/super_mario_bros_2_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/giruzegifixuto.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/84227070839.pdfIn PDF document text
    • http://pevurevakube.rf.gd/34420938229.pdfIn PDF document text
    • http://zalowakudedakov.rf.gd/impulse_response_utility.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/64753652142.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_off0000d545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD545 5184 bytes
SHA-256: f0dd9d3ce851bdb6fdf5ea79e921e079c925d8cacdff94596be835cbacbeba53
font_01_sfnt_off0000e6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F0 10980 bytes
SHA-256: 1c4bc6b93a63b1dbc78bde88db0015c07dda4c48e871e631aaa41de136707068

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