Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5bbfc38b3add79…

MALICIOUS

PDF

70.6 KB Created: 2021-01-29 04:06:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d5cddaddaa3cc57ffe875d48122e760c SHA-1: e5d79b1c9e15990e28cef6b7f4018435eccd8bef SHA-256: 8e5bbfc38b3add794090081b3946660715ec1af9c19860c7fc0a64d3da7211a7
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 'traffine.ru'. This URL is likely used to lure users into a phishing scheme or download further malicious content. 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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/wb?keyword=chat%20rooms%20for%20depression In PDF document text
    • https://cdn.sqhk.co/saseponirifa/dhgheib/happy_fall_season_quotes.pdfIn PDF document text
    • http://megoribituvu.iblogger.org/x_files_theme_piano_sheet_music.pdfIn PDF document text
    • http://podarokinsta.site/another_weird_platformer_20169n9om.pdfIn PDF document text
    • https://cdn.sqhk.co/dawafawux/g26igzB/kidizebatisapizupupavoma.pdfIn PDF document text
    • http://price-list.moscow/10_sticker_packs_for_wakeboardr11iy.pdfIn PDF document text
    • http://copyrightnotice-ig.com/23937325418b8k5l.pdfIn PDF document text
    • http://limevekobo.iblogger.org/my_broken_english_song.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/bulolimepol/four_4s_answers_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/panidopopase.pdfIn PDF document text
    • http://moxutomib.rf.gd/12558837822.pdfIn PDF document text
    • http://jujonejetas.epizy.com/debutogin.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/egyptian_headdress_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/wugisusura.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/project_management_meeting_follow_up_template.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/arianism_heresy.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/fegusinowivaf.pdfIn PDF document text
    • http://didopip.epizy.com/51430357046.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_off0000d8a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A4 5152 bytes
SHA-256: b6cea4c22caaa973625506890209370ed10ebd7a51d3c1039b0e9679692488ec
font_01_sfnt_off0000e9fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FC 10388 bytes
SHA-256: d5a240c4d6d536a36020ae540adeb00a4bb84c08f4951e50c5b3757c977f61a5

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