Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32d38894f337675…

MALICIOUS

PDF

75.7 KB Created: 2020-12-23 10:12:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0e94b136bca04fd553aafebf793c44e6 SHA-1: c387b40b7706575e3dc7cf2a5d736ed9246c5939 SHA-256: c32d38894f33767515e066654b0e7fa383ccc6ed949edd34caf515ae680a9801
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=scruffy+meaning+in+english PDF link annotation
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/zixokojos_kozuf.pdfIn PDF document text
    • https://rusekawavupor.weebly.com/uploads/1/3/4/0/134096427/01614d547bf.pdfIn PDF document text
    • https://xezinaruwi.weebly.com/uploads/1/3/4/4/134479948/cffee2320324652.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/niporofez/18317324127.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2fd6b97992eb55c026f/t/5fc586204f983757209b5eeb/1606780450078/easy_christmas_songs_on_electric_guitar.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe2702b65568422331fa094/t/5fe2936d6dd3bd283538fe5c/1608684400535/bts_paediatric_asthma_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/29167873654.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1ae84085bf90c0e029602/t/5fc53788145a8629dc5a8220/1606760328602/ffxiv_magitek_chair_mount.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d25a7848ba205d3a8ee5/t/5fd1a4cd071bbc6880270d05/1607574733686/sawokusaxesewadiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1866dc40-4fd7-431e-95e4-a0c8f35022ef/69004470426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b5c095c-e062-4093-afeb-25cca5d368de/jajedagomedexemosezi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7419446-2916-40ce-bea4-533e4cc6aa5c/lotodemazisev.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66fe517e72026400ff170/t/5fcacc5074c1090e462b0f71/1607126098179/67914911447.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe27c8145a8629dc7a46b2/1606297545024/large_terracotta_pots.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fed30c58-8ebd-497d-a9bb-392763187d06/zuwesogu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d41c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41C 5500 bytes
SHA-256: 9ceaf1b10793636ac9b4694abd8dee8bfe407cfcfe8eb5f31c9cba7f5ed8c772
font_01_sfnt_off0000e6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AC 11104 bytes
SHA-256: a91b9fe5d148d9e0985c796ebb6bc88d1d6a8c2be3554939d937e3227812d6d8
font_02_sfnt_off00010cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CBD 16060 bytes
SHA-256: 660d05b38fea380e8cc13f4a5a7db764e9bd2a20a73145a73af50c118749f22b

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