Malicious PDF — malware analysis report

Static analysis result for SHA-256 889d2997a247d436…

MALICIOUS

PDF

80.9 KB Created: 2021-09-11 04:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: dd5f5753ea1f2f098a73494f04f47860 SHA-1: 1e12810757b292dead36e217ee6458a4c9a31c0e SHA-256: 889d2997a247d4364134f83e297557b934145a020fd82eed0e165dbf8df89fd6
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 0.9981

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 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://pixomot.ru/uplcv?utm_term=bl3+allegiance+run PDF link annotation
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138d0c47e3b8---zubogokapibukanigalazuru.pdfIn PDF document text
    • http://ugyvednok.hu/userfiles/file/sonudek.pdfIn PDF document text
    • http://edbiji.com/uploads/files/20210905050652_198736.pdfIn PDF document text
    • https://fallsplat.se/bildbank/file/xarezogunemitukoj.pdfIn PDF document text
    • http://k9careclinic.in/ckeditor/ckfinder/userfiles/files/24308388768.pdfIn PDF document text
    • http://kartelabasligi.com/images_upload/files/52438974685.pdfIn PDF document text
    • https://unaizahic.com/Files/files/xidiravasilalobigi.pdfIn PDF document text
    • http://dydlhx.com/upfiles/file///91147034704.pdfIn PDF document text
    • https://hexema.com/FCKeditor/file/jisaguv.pdfIn PDF document text
    • https://tidymoney.com/ckfinder/userfiles/files/fotixajowirepuboduxiwudow.pdfIn PDF document text
    • https://ausztriasi.spawellness.hu/upload/hirlevel/files/51806478109.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/20605538486.pdfIn PDF document text
    • http://joelcsimonesq.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/23709888743.pdfIn PDF document text
    • https://ratoempat.com/contents/files/fubesixapofifilise.pdfIn PDF document text
    • http://prosquash.by/data/12425716794.pdfIn PDF document text
    • http://agecarekorea.com/ckupload/files/vokanilugapupajipire.pdfIn PDF document text
    • https://butchercurnow.com/img/shop/contents/42958435756.pdfIn PDF document text
    • http://henca.com/files/details/file/gavutizatalo.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613011ffc7b61---xewapadazulubezinobenugez.pdfIn PDF document text
    • https://qfuse.it/images/uploaded_files/ckfinder/files/1631291788_68d16bd67c.pdfIn PDF document text
    • http://premiercontainerlines.com/media/ftp/file/7870964298.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/23339505791.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_off0000d806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD806 17904 bytes
SHA-256: eab60dbad584a957e2abc8f036ddea6744e6b43086e49370ff119a803ad4024d
font_01_sfnt_off00010643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10643 10344 bytes
SHA-256: 03ae38a383bd94fed4ecef6a852ae9b70d9b6abb8e429ae38e62a4398f95a9b4
font_02_sfnt_off00011dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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