Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a788a93e048dcc…

MALICIOUS

PDF

154.6 KB Created: 2020-12-13 16:19:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 4677339e86f28bb72955cfba0f1289ef SHA-1: 679352fce43538d78a1d0c3e6292408065f980ec SHA-256: 02a788a93e048dcc62ce3fe595c683dea780bf3534300f2f5f818b8b94812cae
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ggtraff.ru/aws?utm_term=greater+toronto+area+map+pdf'. This URL is likely used to deliver a malicious payload or phish for credentials. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/aws?utm_term=greater+toronto+area+map+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4477408/normal_5fc6513ff1064.pdfIn PDF document text
    • https://takaranedo.weebly.com/uploads/1/3/4/0/134017801/9906934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379380/normal_5f8a6a56857ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f99b041dec9b.pdfIn PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/zapevewif_zotuvigisonozo_wipud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378379/normal_5fd3cc7b4f883.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492897/normal_5fd08c454a795.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/zuxadol/free_download_bailey_and_love_surgery_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/mawudutanuzesadubugupan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c866775-e1e4-4c98-9c52-1db7a9d1215e/schofield_middle_school_teachers.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/wefazanidujufed.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/melugugolovolawekafujokix.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/three_dimensional_figures_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/multiplication_worksheets_decimals_grade_6.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0002341b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2341B 22652 bytes
SHA-256: 728d50aa52e4b3e1dd4aee0a522e88a8cb9cf4d6720de9faa3a93736b5bfcdfb
font_00_sfnt_off0001f845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F845 5008 bytes
SHA-256: ea2b4d52a1639481b47f6a7b6a9ff05d08fa9920011fbf444332b886c19a27db
font_01_sfnt_off0002093c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2093C 12612 bytes
SHA-256: 4b28c390ece3102f75d92bc4490004a67777b4a9192d7f440917082d99653011

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