Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae021478014e4b5…

MALICIOUS

PDF

79.8 KB Created: 2021-09-14 06:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9934ded2d4a07ad7d8401a993970456c SHA-1: 548e2112758b1aed4ce1e4d1dabefad38c7a0f8f SHA-256: dae021478014e4b53d4c8d9ca66c37e9052ebc1e7d1981b3bfca288f252f051e
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 6

  • 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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://ketchas.ru/uplcv?utm_term=types+of+rainfall+geography PDF link annotation
    • http://bzws.zhanyougame.com/ckfinder/userfiles/files/regikobabunajo.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/buteranumowavex.pdfIn PDF document text
    • http://klawiatury-foliowe.pl/_data/file/tirozikowobiji.pdfIn PDF document text
    • https://nutrishop.in/ci/userfiles/files/jopiwekavadivekixaji.pdfIn PDF document text
    • https://braindevelopmentmaps.org/userfiles/files/jojeki.pdfIn PDF document text
    • http://adhdesign.de/userContent/files/20210914034917-14865334563.pdfIn PDF document text
    • http://huerural.com/uploads/image/files/39512238836.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/q9e5kqusqu39apbid1t440sui4/57773486578.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/47881260355.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161342afe53c5c---lavuxeko.pdfIn PDF document text
    • https://mrdak.cc/uploadfile/files/84891249147.pdfIn PDF document text
    • https://olivierdaulte.com/ckfinder/userfiles/files/36676582237.pdfIn PDF document text
    • https://silatur.com/js/ckfinder/userfiles/files/gikijode.pdfIn PDF document text
    • http://symbolfoods.com/files/file///latafelefokugutore.pdfIn PDF document text
    • https://kaptenhoki.com/contents/files/16221032380.pdfIn PDF document text
    • https://fundacjaartfreeart.pl/userfiles/file/rudurogumufikonavoxojil.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/65935979826.pdfIn PDF document text
    • http://coutleelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vokululujukezusiwomaw.pdfIn PDF document text
    • http://bakefruit.com/uploads/files/202109130507146568.pdfIn PDF document text
    • http://toshiteriyakiburien.com/uploads/files/16417860750.pdfIn PDF document text
    • http://kme-kme.cz/files/file/77145576116.pdfIn PDF document text
    • http://tehla.eu/userfiles/file/84402484619.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD610 10616 bytes
SHA-256: fc892caf3e3381c602cba27a44356ea3ce0a4612e8222ec54835ec0ebcfb1a31
font_01_sfnt_off0000ee43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE43 16680 bytes
SHA-256: 3b694e3fb36230d56abdd9fcba18a00cd26881ef4010106c07f350c9e0e7f5c5
font_02_sfnt_off00011986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11986 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.