Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac121f94414303d…

MALICIOUS

PDF

67.8 KB Created: 2020-12-01 11:48:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4945d6cf95a679f623aa92c776afc229 SHA-1: 1ee9c3fd764a88e23a1ff22e160b56cf3e70f989 SHA-256: 2ac121f94414303dbf684fcbe8987022236545e51036b9c8296d3d60ca0e66c4
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 0.9998

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
  • 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://traffset.ru/aws?utm_term=latest+avast+antivirus+for+android PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/paropabaru/kulojujufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed55343e-8a71-42ba-81b2-30337829cf85/14071351460.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/37688135116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54e6ae32-1c43-443a-a2ac-f2ae49f574d5/57368131493.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe20c5e6d49a06bb5a4516/1606295749908/nifokukulag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79dfbb71-7e19-4dee-9685-20b98497f9a7/fumolaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/783c9a56-df2b-48fd-8bae-b4926102f570/3681112706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc539083-c64d-4c7c-9455-e352abfb4c2c/c_major_backing_track_-_rock.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ba4ac84-e567-4f3a-b555-20b0aa76e8a7/deadpool_2_streaming_hulu.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/78536983995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10c8c014-e463-45a8-ab00-6f54f96703ea/43924084588.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffb205e8e827d4288adb3/t/5fc15d961972c46e3cd1e924/1606507927646/sikepuwi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd00bedae50a014587d67a/1606222015567/wuxubegadaxebitez.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/family_worksheets_therapy.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_off0000ce35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE35 4872 bytes
SHA-256: 28b040697e3fa4ed08cbdc649c5f48838c216a37edbc276844502421fb476b53
font_01_sfnt_off0000dedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDD 10544 bytes
SHA-256: 36eebc8d25c5dcfae47eb07d7f08316224073ea4918f897b10d4ad89096e2492

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