Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fa1d0c34366efb…

MALICIOUS

PDF

64.1 KB Created: 2020-11-18 13:26:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 141675aed31c9d0b59454fc36ff60ec5 SHA-1: 209e2b7d36d185f68ae00cb38162102e2e4bca0b SHA-256: 74fa1d0c34366efb317c1b7cce646b9270199e7660faa800b1c1205d01e45f8e
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://traffine.ru/123?utm_term=solar+light+batteries+walmart PDF link annotation
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/vesokipuz_judinenoni_mojosetula_powuri.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/628cd04.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/zixutinofukuvipaxi.pdfIn PDF document text
    • https://fiwisiroveton.weebly.com/uploads/1/3/4/3/134339953/raxoriwurevumij-repota-tedesideles-romupevatimodi.pdfIn PDF document text
    • https://bubawupuga.weebly.com/uploads/1/3/4/3/134380130/fimowifafarevobu.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/13617772-d15f-466e-ace8-75e85306fa3d/al_diablo_con_el_diablo_pelicula_com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa83e60b-81e8-403b-9ba0-c3561c71e259/wigebifana.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/87949363751.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/bangla_movie_bossgiri_shakib_khan.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/62351269708.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/spiderman_homecoming_2016_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/tipos_de_estilos_de_vida_ejemplos.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/rock_brain_coloring_page.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_off0000bd6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD6F 5432 bytes
SHA-256: 68977beb37cc4f52e43d2b4e448f29b28ee5209d33fa41aab302e8dd71a70d69
font_01_sfnt_off0000cfcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCC 9972 bytes
SHA-256: fa8ddc6abe037c92c4e8aa24f19ea5d2df5999c20151239971a34f8c5fefd694

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