Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6eb1e0265e19b6…

MALICIOUS

PDF

81.9 KB Created: 2021-09-09 02:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-22
MD5: 0f0d44911a6d8f0774565c4485e57125 SHA-1: c0b7369c0275e8b6cd90619fd40c4f82e1c93c59 SHA-256: 9b6eb1e0265e19b6781daa199ee68d90d57a777c64b458c5b23c9e91c102aac2
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by 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 0.9977

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://gabident.pl/local/userfiles/file/febonatipujasefigalidug.pdf In PDF document text
    • https://isabellepieman.com/userfiles/file/dijawumulowuzodifi.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/zubonamesatuzo.pdfIn PDF document text
    • https://zahidnawaz.com/UploadedImages/image/supukenazowexiso.pdfIn PDF document text
    • http://csaladiegyteruautok.hu/userfiles/files/zisadigi.pdfIn PDF document text
    • https://lnpro.in/ckfinder/userfiles/files/60039878025.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/xawisoz.pdfIn PDF document text
    • http://dalieuht.com/app/webroot/uploads/files/wigirazalesugeda.pdfIn PDF document text
    • http://hausdergesundheit.net/userfiles/files/dakezifiwuvanowonivuz.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161348520344ec---fokuxiguvuvomanunodoz.pdfIn PDF document text
    • https://dacinsara.ro/fckfiles/file/nedogunawoneravodej.pdfIn PDF document text
    • https://slicktechproducts.com/newerac2c/userfiles/file/gizedi.pdfIn PDF document text
    • http://coverybox.box8websites.com/ckfinder/userfiles/files/zaxelilopeburefaga.pdfIn PDF document text
    • https://residenciasanamaro.es/userfiles/files/62905255247.pdfIn PDF document text
    • http://gdwtechnology.com/fckeditor/file/fagekipin.pdfIn PDF document text
    • https://rumputhijau.com/contents/files/97053235360.pdfIn PDF document text
    • http://alrabbanoilandgas.com/file/files/61707894069.pdfIn PDF document text
    • http://proximeo.com/ckfinder/userfiles/files/kawunevedefivo.pdfIn PDF document text
    • https://www.gullyracing.it/admin/ckfinder/userfiles/files/3582698915.pdfIn PDF document text
    • http://euroear.eu/ckfinder/userfiles/files/72460309368.pdfIn PDF document text
    • https://rajakedua.com/contents/files/51831540069.pdfIn PDF document text
    • http://cistenivytahu.cz/upload/file/36889761754.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/begujobotogifisetexusa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=kof+2002+magic+plus+2+apk+free+download+androidPDF link annotation
    • 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://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_off0000d8d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E9 11376 bytes
SHA-256: b24c7053ba6b0b2ae8774dfcd4b1f5eae373ced281ff30d5b91041da35443fb7
font_02_sfnt_off00010b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B98 17788 bytes
SHA-256: 3d9cb8081026a3007e1772e798b8a680e0befec372065c69affff97254cadf44

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