Malicious PDF — malware analysis report

Static analysis result for SHA-256 59b3f3e2f8246b31…

MALICIOUS

PDF

83.3 KB Created: 2021-04-23 14:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 171a40a68c8885199d184741451cd84c SHA-1: a30400dd969862fb1d757235a8ce8b02df44accd SHA-256: 59b3f3e2f8246b310fb2ac87b85c5d88e77cc3ed8da3efe64036dbbb92c5173d
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dafemum.ru/strik?utm_term=how+much+does+the+average+person+make+a+year In PDF document text
    • https://cdn.sqhk.co/kigimole/tdcBhgu/7207699996.pdfIn PDF document text
    • http://myvenza.ru/tunturi_bike_ergometer_manual8qig8.pdfIn PDF document text
    • http://fruitslope.online/les_miserables_songs_youtube_bring_him_homesofb8.pdfIn PDF document text
    • http://cartest.pro/401832306571m8bw.pdfIn PDF document text
    • http://stonersfranchise.com/24986624314rjxbi.pdfIn PDF document text
    • https://cdn.sqhk.co/kisoxukapab/c4bgemn/sowefife.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://axecheat9.xyz/26017628388vh1g.pdfIn PDF document text
    • http://lojasamericanasbr.com/star_stable_free_star_rider_accountposv7.pdfIn PDF document text
    • http://good-production17.site/fegubimodegiteronikuzecqan0.pdfIn PDF document text
    • http://qrastenmap.online/boat_trailer_guide_post_bracket0b2lx.pdfIn PDF document text
    • http://foteraza.22web.org/3463888005.pdfIn PDF document text
    • http://volosaty100.xyz/what_if_song_kane_brown_lyricshspb0.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/FQ7jjkG/get_more_followers_on_instagram_apk_download.pdfIn PDF document text
    • http://rastet-malysh.ru/what_are_the_three_levels_of_hierarchy1wr13.pdfIn PDF document text
    • http://edayafar.xyz/mutenuponowasi7pq2o.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/gopifu/62245011316.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/13003118191.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/83990729625.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/lesson_1-_2_more_geometric_figures_answers.pdfIn PDF document text
    • http://birifamabaxum.rf.gd/troy_bilt_2800_psi_pressure_washer_for_sale.pdfIn PDF document text
    • http://bitadutesuge.rf.gd/jetixumasimogojokixawop.pdfIn PDF document text
    • http://zukewanika.rf.gd/gevinezoberota.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/24815623469.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_off00010283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10283 5732 bytes
SHA-256: 470791449439258b16d625b6e4937a75085601738006996bce3e71934da80970
font_01_sfnt_off000115f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115F7 12868 bytes
SHA-256: b9f6059f071ab5a764c878ab4ac3389d542424625057a4894cdf333c11f797d3

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