Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ca1cdc9fb266e7…

MALICIOUS

PDF

85.7 KB Created: 2020-12-24 20:15:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9ee44deaf4a940fbd7ead1cb2c925d11 SHA-1: 6c8f20421f13d2150009f8e3a45acb9878a826c8 SHA-256: b9ca1cdc9fb266e73a3f91c30bb2a1b05ca4acd6457b936aef24318e356dd957
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://trafffe.ru/strik?utm_term=super+soccer+champs+2020+mod+apk+android+1 PDF link annotation
    • https://cdn.sqhk.co/dadakafopina/ggXhbjf/voice_recorder_audio_recorder_sound_recorder_app.pdfIn PDF document text
    • https://cdn.sqhk.co/jesuzedavoti/XfIgduh/talot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409096/normal_5fac39af03dac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393220/normal_5fcc7247912f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373526/normal_5f9bb659f2ab0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426418/normal_5f9be204dba1c.pdfIn PDF document text
    • https://cdn.sqhk.co/zawafolor/ZEidjgg/murufovopub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449779/normal_5f9ff910c0905.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/varolexexus/versace_on_the_floor_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/32846281449.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000120c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x120C3 22976 bytes
SHA-256: e6a92e873902e21fbbe9159f8a361cd51d76cd4ccf2088a6558408a56b0b16b4
font_00_sfnt_off0000dd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD67 2888 bytes
SHA-256: 4861b00640365d7b9e6e081e6da95684514ab4325a6e54de136cbf0ae6afde2c
font_01_sfnt_off0000e7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A9 5776 bytes
SHA-256: e78d33969dea49e9e747ae8ec4c87284368d13dd7d84588c2c43a35c79b9442b
font_02_sfnt_off0000fb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2A 10904 bytes
SHA-256: 5940c85016058cadd84d7e5a1a01bab13ced625920adb183c33f8ab80b8e32c5

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