Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf9272645f4ab7e…

MALICIOUS

PDF

71.5 KB Created: 2020-12-20 21:21:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5b783219c3805054b3f476222b108678 SHA-1: 1756694e0f9352672f6e5ed7d13b360e34210e4a SHA-256: ddf9272645f4ab7e8168633a3b1e431aa3a8526a2bb7963d1997e3465dfa9850
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://traffine.ru/123?utm_term=ca+notary+acknowledgement PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386839/normal_5f933413bff55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425738/normal_5fcd255281373.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495696/normal_5fce96f607d4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_5fa0368b88321.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/68c07a82-db69-45dd-be72-f4fd041e16e4/49991353033.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d786563-873a-458a-ab57-8eadd14ed1e3/36544472783.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/bunion_corrector_platform_sandals_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0d359a4-c889-46f2-99d9-fb4a74704057/calcul_de_la_cylindrC3A9e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee77062b-d0b9-44cb-a547-fa180408a968/14199454417.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc529e012facd59cec8ad00/t/5fcd0f92eb18547f4b898d32/1607274387690/19699729613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/513a4a8b-00e2-489e-a016-ef9a55999fc7/sikobadurojizifajezo.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/legends_never_die_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0fd63de-1c23-4461-8625-8ab65c86a35b/53629124423.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abcc5a54-c4c5-4f26-a36d-eede0715b43d/poptox_apk_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC666 5244 bytes
SHA-256: 19240db2089f1dde93f6469ac45af7b0394c9354ec371577b50662ae7c5f9b61
font_01_sfnt_off0000d842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD842 10468 bytes
SHA-256: ebff2a0a5eb3b2a66297defdad268a8b22337785666f3b5f8deca9db0a7c7460
font_02_sfnt_off0000fc31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC31 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e

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