Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dae056683e3c492…

MALICIOUS

PDF

193.8 KB Created: 2021-07-04 01:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ccdd62dc44318fd7ab4d2f544e514de1 SHA-1: aeba04a8906794be1fc9a38e1002616454a6f0a2 SHA-256: 2dae056683e3c49267508a153d48bbcd85059f2d1ac956860b7398576864d958
156 Risk Score

Malware Insights

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

The PDF file contains a large number of links, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

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://ahkjt.com/upfile/file/42368321953.pdf In PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/728a6a5ebec333397a0499e864361322/84302755745.pdfIn PDF document text
    • http://giasuthanhdat.vn/Images_upload/files/82748364879.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd4567b59c---82405048227.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b13d0ddad9e---tubufidozet.pdfIn PDF document text
    • http://traiteur-ribot.fr/userfiles/file/fosebavipufisewudos.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d60e78cfa6---fofijurudimifofanikag.pdfIn PDF document text
    • http://tai-yang.tw/taiyang/upload/file/64908306536.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/187ff32fcacb4e1e6d2eb3967e16d98e/jerejokepapusinisa.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb1d798ce9---sabigumekagepawin.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8471e9c46---zudoguziferakakigovus.pdfIn PDF document text
    • https://retake.dk/ckfinder/userfiles/files/54239540676.pdfIn PDF document text
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/72858819910.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/5853731581.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b1bb37384---nefifirofeganupugemidiva.pdfIn PDF document text
    • http://cbestdesign.com/ckfinder/images_store/files/6883408565.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/4961d8878bbfb81dc6fdbbca1e0aeeb5/tesezagaziwonok.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/fanijugodufegupowetudep.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/ksq67q7unvtu66abm7nom601u6/tirojozolodutezupaporafe.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160bacfd02107a---vufixiwisawasu.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/266a55189ccd16e8bee921dc5c1dfd06/rojesipimesidit.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/k7a1vjkjq71dmande767554ln0/vegewadapov.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16077e621ebd88---dokizupitajawedepukov.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/00a49e981d667c43888eb3b6ec329ed4/27185114169.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=foucault+personal+lifePDF 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_off0002919c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2919C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0002a9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9AE 22828 bytes
SHA-256: c66dd3b0981293ba2d7736bdac1486b98cfe566936e1c7bee314cc5623d835d4
font_02_sfnt_off0002e1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E1A7 10552 bytes
SHA-256: e26ffff538cfb9a73c80176fd77e3e727126678085b547da50a13a4368353bf2

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