Malicious PDF — malware analysis report

Static analysis result for SHA-256 c81e646359f70de3…

MALICIOUS

PDF

66.6 KB Created: 2020-11-11 01:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 01d009efccb0ffb061ca1fbc6c34a333 SHA-1: d7bac669b2f00bc15869562ef0870e2e6077b3d7 SHA-256: c81e646359f70de301bdb0b47a040e0b66f101e5090639fe8a70a9c72d04a4ae
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 0.9995

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?keyword=celtic+circlet+meaning PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408871/normal_5fa214d20d408.pdfIn PDF document text
    • https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/9222548.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426686/normal_5fa8da404c7ed.pdfIn PDF document text
    • https://webeboxux.weebly.com/uploads/1/3/4/4/134493090/9782579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391642/normal_5f8e1fd238d36.pdfIn PDF document text
    • https://wunamixexot.weebly.com/uploads/1/3/4/4/134456109/ruwafebod_moder_bedel_jafuta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375507/normal_5f8bad5f87542.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/lukepepe/1311036552.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/the_book_of_the_law_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d707235-53ba-44db-87dc-1b5fe1bf92d1/red_wine_mushroom_sauce_for_pork.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_off0000ca1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1B 4844 bytes
SHA-256: bdd58a5aa02f665251ca5afa00b58e535383322062e71556da4538b3d6716d81
font_01_sfnt_off0000da78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA78 10416 bytes
SHA-256: d1cb78c29c3df793bf06b5257edeea16392fd41dd572eae1dbb58ffccfb48438

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