Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2ad12a52ec4f73…

MALICIOUS

PDF

78.7 KB Created: 2021-02-22 20:53:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5ba86e1a5d31e6648a6a25d96e992a6d SHA-1: 264e3937f7b711a253c9d5396a02908ad5cc9604 SHA-256: 2c2ad12a52ec4f73eb1ea41a2c19e638826e8eb7792f0534753c5cb20e046d2e
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, which is also listed as an IOC. The ML classifier strongly flagged this PDF as malicious, and ClamAV detected it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains text that appears to be a title, suggesting a lure. No scripts were extracted, but the presence of a malicious URL indicates an attempt to redirect the user to a harmful site.

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
  • 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://crophysi.ru/123?utm_term=our+troth+volume+2 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4465709/normal_5fcc5381a7114.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/piijhbC/voicemeeter_alternative_for_mac.pdfIn PDF document text
    • http://yildirimotobursa.com/83665727316j92wx.pdfIn PDF document text
    • http://igafnd.org/11508089786l3jg3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402517/normal_5fc8831e34a8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500189/normal_5ff1236e894cd.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/Jjbhqjg/lullabies_for_babies_to_fall_asleep_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/b6hfkgj/lidavawuzefujebufesogu.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/a4ZEhcG/se_dice_hola_in_spanish.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403418/normal_6001f20ebeedb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383917/normal_601e4af505f87.pdfIn PDF document text
    • http://ipoteka.net/nickelodeon_kart_racers_xbox_one_digital_downloadarjjk.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/cXhdwsT/troll_face_meme_sticker_apk.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/kefefetafij/volume_button_headphones_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/wegazunezonoworuxen.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/biologa_celular_y_molecular_harvey_lodish_descargar.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/bitlocker_recovery_key_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/funny_and_dance_video.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/64326774512.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_off0000f646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF646 4756 bytes
SHA-256: 5fd2abf697752a9e02dd1b3950b714ff3c0d54a696ca7c792099a7f1ccd29f24
font_01_sfnt_off0001064f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064F 11752 bytes
SHA-256: 65972bf75e7028b635ab6fdae92232644aeb55660c5e4f8e6433fe405fbeeae7

Open this report in the interactive analyzer, or submit your own file for analysis.