Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf483888c4e167e…

MALICIOUS

PDF

72.7 KB Created: 2020-12-21 08:52:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 60113332d7818524159dd0a41b11e342 SHA-1: 93375294ef1e980e76658553564c5f8443aa3d49 SHA-256: 7bf483888c4e167ea52e743f13c097ef5636254fdcc03d9882b6b6797411e612
104 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The embedded URL and the presence of a visual download button suggest a social engineering lure to trick the user into downloading a secondary payload. The document body, though partially corrupted, contains text related to a game download, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/strik?utm_term=gardenscapes+2+collector%2527+s+edition+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f9265a3668bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_5fb72bccd4113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379231/normal_5f953b961d3f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387815/normal_5faf98b4f0206.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374545/normal_5f9b482b9ef24.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/71acbdfe-c5d0-449f-ac8b-e72dbc30cdb1/8248967015.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc16b033398ff751531a7f7/t/5fc5b34ef81c9a2a0c68b2e3/1606792015731/what_causes_friction_between_solids.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8fbb67b-32db-47bb-8e83-9302b1bc8be2/jidapotonupusedajapob.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6588f27a199023ada6d7f/t/5fc8395d7ff5a343ebed97e7/1606957406002/78399377443.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10f0fab79f442f22a8155/t/5fc135547acac6192aec9a6e/1606497620546/biochemistry_berg_6th_edition.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd146c803f460880cbfffa/1606227053115/kojigimiviwitibuvogototig.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe0062051e6b539731e53fd/t/5fe00b86f23a830a59d40a61/1608518534517/great_gatsby_drink_menu_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fe38bcc-b2d3-4c7c-9709-14dab121254e/dasufenagolil.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_off0000d232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD232 5356 bytes
SHA-256: 827abde168c9866a5939bd3ce2119b793aef38dc71c52e906b793136d207047f
font_01_sfnt_off0000e493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE493 15844 bytes
SHA-256: 507d1d70527081fd2acdcd993625a50cd907d15112196d41ecc47fdda29b7e20

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