Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2aebc186a914a29…

MALICIOUS

PDF

85.2 KB Created: 2021-09-14 08:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 4b92c5a020a9a76e41040249d8763665 SHA-1: 2013d0648697cd1de5105d62cb2149a2284e1326 SHA-256: c2aebc186a914a29558edeceadec4f30ae2356c650f86c4f30e2f7d4ba27f3e0
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The PDF structure and embedded links align with phishing or malware distribution tactics.

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://abwjefferson.com/uploads/files/90062146564.pdf In PDF document text
    • https://mediaskills.rs/files/bafukanekamalegikumib.pdfIn PDF document text
    • https://repetitorebi.ge/userfiles/files/dokejatawugadufeterumu.pdfIn PDF document text
    • http://michelesherrinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/85572074319.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/6959978828.pdfIn PDF document text
    • http://sangiorgioautoservizi.com/userfiles/files/dopeluvikexamabu.pdfIn PDF document text
    • http://swatimishra.in/uploaded_files/userfiles/files/zevimazevaxaxoxodonil.pdfIn PDF document text
    • https://netwindowvn.com/uploads/userfiles/file/zutejik.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/kepakenu.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/adf3b0eb37177cc2472e21f8669dc46e/dezixos.pdfIn PDF document text
    • http://verynailscm.com/user_img/file/79340217871.pdfIn PDF document text
    • http://rld-carbon.ru/file/77070576360.pdfIn PDF document text
    • http://ucokampen.com/media/files/99524971660.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613b9a982f646---13434865426.pdfIn PDF document text
    • http://elsped.hu/files/file/23297490909.pdfIn PDF document text
    • http://jsdarvin.com/files/jedukef.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/96636369327.pdfIn PDF document text
    • https://goooinggroup.com/userfiles/files/20210910_040623.pdfIn PDF document text
    • http://www.jfac.kr/ckfinder/userfiles/files/58044586174.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/jutifunofisubepilegozikox.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16131dda34a7c1---56835665190.pdfIn PDF document text
    • http://wingmanresearch.com/userfiles/files/nifeboropozogofuwixuni.pdfIn PDF document text
    • http://china-baby-clothes.com/d/files/detodotuzevipasomu.pdfIn PDF document text
    • http://marleenjansen.nl/images/uploadfiles/30397300974.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=what+weapons+did+the+samurai+usePDF 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_off0000e9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B5 10788 bytes
SHA-256: ea387b805b9e636a298c3d8d043ec9640bd64f2b7084e00208ebc40cdd2d107c
font_01_sfnt_off0001026a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1026A 17576 bytes
SHA-256: 2aecd959ad2445367de033128bc07b228b9b92ce5c8a5ce4ffe09d202826bb7b
font_02_sfnt_off00012f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F4E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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