Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd6249d8d488b8b…

MALICIOUS

PDF

87.1 KB Created: 2021-09-21 08:36:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1e762875a6528dc506d0c62e8c92260f SHA-1: 3ec686e80b051106347f3b45c7fd46a31171458e SHA-256: 3bd6249d8d488b8bdc4972a7fe370e5e3a01a6d8841842fd3db9ee6b6070c3e5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a tactic to obscure the true destination of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://mimpishio2.com/contents/files/17909652719.pdf In PDF document text
    • http://1carl.com/userfiles/file/wexeralawojexubok.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16141f925842c0---xesawumuxiz.pdfIn PDF document text
    • https://giaynangchieucao.com/userfiles/file/kujebaruvenivujepifagava.pdfIn PDF document text
    • http://miroslaws.com/ckfinder/userfiles/files/38325502259.pdfIn PDF document text
    • http://fortwashington.abwingsmd.com/uploads/files/99470354175.pdfIn PDF document text
    • http://cortocircuito.trialpanel.com/images/Upload/files/31176528303.pdfIn PDF document text
    • https://stdtekstil.com/upload/ckfinder/files/lololubosofemeb.pdfIn PDF document text
    • https://cristalparkhotel.com/ckfinder/userfiles/files/wexojaget.pdfIn PDF document text
    • https://qpshouse.com/upload/image/file/wefulowugoda.pdfIn PDF document text
    • https://beyondpins.com/calisma2/files/uploads/farixefuwiriselep.pdfIn PDF document text
    • http://solentpodiatry.com/jackvl940/web/content/images_uploaded/file/48881711178.pdfIn PDF document text
    • http://teleinwestor.pl/userfiles/file/tewosawap.pdfIn PDF document text
    • http://sinners-party.de/media/file/38278884064.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/gizibebagurukufupiz.pdfIn PDF document text
    • https://expomediainc.com/upload/file/kopukosozukamowonemo.pdfIn PDF document text
    • https://chuyennhakienvangvn.net/upload/files/seruvipugokapoxuwonido.pdfIn PDF document text
    • https://trsoftyazilim.com/genelresimler/file/pexomibaxefapejesikavexiw.pdfIn PDF document text
    • http://taigesw.com/upload/files/7376334077.pdfIn PDF document text
    • https://gastriklandsbf.se/UserFiles/files/39730313038.pdfIn PDF document text
    • http://abwjefferson.com/uploads/files/tipelopebofowizajosokok.pdfIn PDF document text
    • http://cochemical.com/upload/files/walolemevav.pdfIn PDF document text
    • http://italianopizzeria-pg.com/uploads/files/vubamamatozet.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=powerpuff+yourself+game+free+onlinePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA11 18880 bytes
SHA-256: 87723dccd96274d62e01506dfc942d759ae36a3eb227e036e1da11f16e8d52cb
font_01_sfnt_off00011b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000133b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133B5 10904 bytes
SHA-256: 5cb391af100708f119c4df5525142e62c0d2cfeb475026220b7e63252aeff817

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