Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32e533902049c45…

MALICIOUS

PDF

75.3 KB Created: 2021-02-23 21:40:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7a4cd3cb6b6675de6a62ef04657084b7 SHA-1: 4aca8add96d1355a3dd0376f0f20050f5da3f0aa SHA-256: b32e533902049c45f68b680deb6a2c0c0ddef5daebd12189f8e082e81f1dfdd2
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, specifically flagged as a phishing trojan. It contains an embedded URL pointing to 'jottigo.ru', which is likely part of a phishing campaign. The document body, though heavily obfuscated, appears to reference 'Walmart black friday ad 2020 tv deals', suggesting a lure to trick users into visiting the malicious URL.

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://jottigo.ru/123?utm_term=walmart+black+friday+ad+2020+tv+deals PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450256/normal_60029f2456cf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369317/normal_5fef9523f285e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5fd2d06b6e0f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444123/normal_60220911011aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473654/normal_60135fed90712.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491159/normal_602cda86a91d3.pdfIn PDF document text
    • http://ca-manalapan.space/cima_p1_questions_and_answers0xnqr.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/kavugusepe/definition_of_business_research.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/57773111074.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/toxumux.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/21441786193.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/bagadiya_ke_dere_mein_ragni.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/votasalose.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_off0000e6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E5 5820 bytes
SHA-256: 04308c2e82924f6358f6235fa91ed03af11fec58d0c679e792488904464f5ecd
font_01_sfnt_off0000fab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB9 11032 bytes
SHA-256: 7eebae0f505c147863452c250efba2915fb324474dd7d3f6048a278da08cec4a

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