Malicious PDF — malware analysis report

Static analysis result for SHA-256 e02320aeb5f5d865…

MALICIOUS

PDF

84.0 KB Created: 2021-09-03 10:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2a54b4ed2a678121546fcbd3e7503504 SHA-1: 9b6aac16ecebd66fb9bd008a49b7c50fec0160b7 SHA-256: e02320aeb5f5d8650cdfaa020d3148193b0110bb28114d9f6d8f9911d9f7d962
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF link farm heuristics reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ilkyoukais.com/Images/Media/files/53033355338.pdf In PDF document text
    • http://szpital-sulecin.pl/images/fckfiles/file/wekofubutopasapapax.pdfIn PDF document text
    • http://tbeaindia.com/userfiles/file/gamezuzetekezowipegu.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/17191047370.pdfIn PDF document text
    • http://sinice-rasy.cz/files/file/riruba.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/goletaped.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160beb4413df81---zegikiwitajugewuposusif.pdfIn PDF document text
    • https://noihoithanhtuan.com/media/ftp/file/58936829258.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/a54186fd054bed91f9fb600c0a7ea129/jamavozibirivamakuro.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161296b24ee941---79559431181.pdfIn PDF document text
    • http://www.hgekc.com/media/userfiles/file/34050250865.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a3db45afbfb---vesimazipitirata.pdfIn PDF document text
    • http://futimisdev.com/userfiles/file/dizegusutezumogal.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16080a5d9e3694---vinimijek.pdfIn PDF document text
    • http://tpokebar.com/uploads/files/2877751234.pdfIn PDF document text
    • https://sherwoodchamber.org/ckfinder/userfiles/files/92502751713.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/1445192992.pdfIn PDF document text
    • http://penzion-u-zamku.cz/files/file/nalesenagakuxo.pdfIn PDF document text
    • http://bangtutrang.com/upload/files/71473303608.pdfIn PDF document text
    • http://vlajkylevne.cz/UserFiles/File/giludubopisoxo.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/53247026102.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/fc6joq2tk3t6q0l0ej5pi6fenr/nubitawafuvidipaguwemut.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/3uq89h0hircbqslvhn8kl09bb5/muxajolisevigikas.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160a2af8ea0866---pejaruzegamijijuzesak.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f345d8c7a2---30018173691.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=cozy+apologia+analysis+pdfPDF 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_off0000e5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D2 10548 bytes
SHA-256: 603ca7dee396aea3687c74dacb0f588064fe6dfaedf45b996c20d9c4b858b796
font_01_sfnt_off0000fdd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000115e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E2 17380 bytes
SHA-256: a2a3eb75542ff35f159844c1798e1cef3d10539432f5710d262d0ca200b20230

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