Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07892174991c85c…

MALICIOUS

PDF

69.6 KB Created: 2021-02-07 20:44:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: c39e96d71b4fb5b1eb5bcc14f40e4e32 SHA-1: 3d9b3197ab562cea27209b0fd1a3dcab7107248a SHA-256: f07892174991c85c323aa30edac3b6e7ab2f99cdee398794273ac2ae01afb849
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains an embedded URL that masquerades as a preschool worksheet, likely serving as a lure to a phishing or malware distribution site. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it is designed to redirect users to potentially harmful content.

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://leonvi.ru/aws?utm_term=printable+preschool+feelings+worksheets PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370263/normal_5fd23738cbde8.pdfIn PDF document text
    • http://rotixumuzu.22web.org/bengali_songs_video_songs.pdfIn PDF document text
    • https://segapokepex.weebly.com/uploads/1/3/4/6/134649200/donarijosakura.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377095/normal_5fcb69d066ae5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393353/normal_5fe3b4248520a.pdfIn PDF document text
    • https://cdn.sqhk.co/pebekaja/ij6jfrj/baban.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_6019cffdf0f82.pdfIn PDF document text
    • http://lusejifunod.22web.org/devaloxodezibi.pdfIn PDF document text
    • https://cdn.sqhk.co/xusopusavo/cggiji4/xatotipubakofowigujazegow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484358/normal_5ff12b0a1b645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459640/normal_6013c4b4092f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414174/normal_5feeb1c67f653.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/a0Vgf1X/schema_electrique_simple_allumage_avec_voyant.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/nutanigonu/68806406383.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/napuwapuw.pdfIn PDF document text
    • http://zukusuvajijip.epizy.com/diy_collar_necklace_template.pdfIn PDF document text
    • http://tanewibuzak.epizy.com/68889994827.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/net_framework_4._8_windows_10.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_off0000d068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD068 5576 bytes
SHA-256: 6007d833c57dcaf6dece4f1237fcf153ac85e49230ff37d1c48e23206b626cc1
font_01_sfnt_off0000e367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE367 10628 bytes
SHA-256: f5fd22f1cc97f28400f9917ca87028ddc9c1aa7d8e9412cdf6221bb465994d86

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