Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dd0610413273871…

MALICIOUS

PDF

92.2 KB Created: 2021-09-13 03:56:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 83a616e77e5f12e84e45cc9bc958fa66 SHA-1: 2f20d3c24a682ccd412676014f90a3ce9da6a2f4 SHA-256: 5dd0610413273871928386ba6f8f769e48d287872b468d505e5e384574c49688
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9968

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://coretry.ru/uplcv?utm_term=zelda+ocarina+of+time+2d+android PDF link annotation
    • http://theeultimatenetworker.com/ckfinder/userfiles/files/gakoratapoletuxoxot.pdfIn PDF document text
    • http://raffaelecavazzoni.com/userfiles/files/14165231466.pdfIn PDF document text
    • https://livresdarts.com/ckfinder/userfiles/files/33963801480.pdfIn PDF document text
    • https://ww150001.linebot.net/upfile/files/20210902030909.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/5270055241.pdfIn PDF document text
    • https://menu2uplus.com/images/file/rirejizerikukut.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/zezexusabozotujajudibatu.pdfIn PDF document text
    • https://charterboatdeliverance.com/uploads/files/dasizebegegebotute.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137b9b4a31a4---norenaxomenagamemix.pdfIn PDF document text
    • https://nordiskvillaventilation.dk/userfiles/file/sogorosabipazafu.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/84137375651.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/40009048274.pdfIn PDF document text
    • https://profitaler.com/UserFiles/file/81221964401.pdfIn PDF document text
    • http://unseretochter.ch/images/file/17941706900.pdfIn PDF document text
    • http://dentalweek.eu/userfiles/files/25429868833.pdfIn PDF document text
    • http://bxbrdh.marketsearching.com/upload/files/72147687087.pdfIn PDF document text
    • https://gemwares.com/userfiles/file/65642375983.pdfIn PDF document text
    • http://legalinet.eu/userfiles/files/junikilesamobemubi.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16132c3e3546f8---79556542996.pdfIn PDF document text
    • https://afmiletisim.afmiletisimajansi.info/resimler/files/tijebogano.pdfIn PDF document text
    • http://inspiredindianfoundation.org/uploads/daxudupagaduse.pdfIn PDF document text
    • https://indiansabroad.uk/userfiles/file/75696335340.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/69400298799.pdfIn PDF document text
    • https://pearproperties.in/userfiles/file/63018689791.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://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_off0000ffd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD6 19216 bytes
SHA-256: cb2510e978f08786ea6f528d3a808db54b9afcbe0da66242579f193f026b63a2
font_01_sfnt_off000132ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132CA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AE1 10552 bytes
SHA-256: dc01d7ee701c28afb91983156115b3d02a78514b70868bfaf6eac878ffc45b57

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