Malicious PDF — malware analysis report

Static analysis result for SHA-256 57b3dbc3feb98d9c…

MALICIOUS

PDF

78.8 KB Created: 2021-02-10 08:18:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d024ff745a7ad7271ccc031115b3e778 SHA-1: 16a6303cffaab7ad1f77f30ee5d85cabfe043d21 SHA-256: 57b3dbc3feb98d9c5bfa1699f602bee56c8589dcfea61ef420a454e95d08065c
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a website, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by redirecting them to malicious 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://baarspo.ru/wb?keyword=bejeweled%20blitz%203%20free PDF link annotation
    • https://cdn.sqhk.co/guxuboru/hfifqgd/wiwokimine.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/heicgey/wuvefibijozopato.pdfIn PDF document text
    • http://reflectionss.space/budilikevowusanvkob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390637/normal_5fdb8d6814de5.pdfIn PDF document text
    • http://fashion-deals.xyz/vs0d607.pdfIn PDF document text
    • http://graatorama.space/bu_kek_siansu_download6mwlx.pdfIn PDF document text
    • https://cdn.sqhk.co/satofapo/hc8xijZ/romozudidibaveme.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/cTz3Jod/7756859552.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/gdERyih/49652989956.pdfIn PDF document text
    • https://cdn.sqhk.co/mimofeto/eXUWGyU/vifewiga.pdfIn PDF document text
    • http://mmmuuuue.space/interesting_facts_about_spain_cultureipl04.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/sizabo/dajjal_history_in_islam_in_urdu.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/casual_employment_contract_template_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/antique_gregorian_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/27221935672.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/72355896776.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FF 3748 bytes
SHA-256: bb04d2f297220198489070a31c8caab5068fe25334c1ec76b4684b43c4f467fa
font_01_sfnt_off0000f439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF439 5084 bytes
SHA-256: f1065765f3cab78282199ea52b6f7daf7bf640de600e1b887532d127d1e92252
font_02_sfnt_off000105b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B8 11288 bytes
SHA-256: 8936dc027f4b768570fe684e12dceea1ed447600325179f769cee799a92198a2

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