Malicious PDF — malware analysis report

Static analysis result for SHA-256 af27932e0e3adea3…

MALICIOUS

PDF

70.0 KB Created: 2021-09-25 18:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 8f6cb56e102f55bf3836d0fb7968c0a1 SHA-1: 2bca857154fa38a26815b53f6401a5c2b590f418 SHA-256: af27932e0e3adea325fbfddb2e060ff89ea24c6b02be91f4ec5b9709261aed81
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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://dtyxbpzx.com/filespath/files/20210925084647.pdf In PDF document text
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/26174276670.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f5f327d80c---jonijis.pdfIn PDF document text
    • http://neoneofitou.com/ckfinder/userfiles/files/vavatariwomexojulon.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/c0bd39e2daf1327af554cb5fd372aa16/dudefogureridezofodetal.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/b729061d6c157fb8e6470a8c7248f6c8/wuxawididiz.pdfIn PDF document text
    • https://meritumptt.pl/dokumenty/file/9762601191.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/99d85a1949b07b2e84b6d55f788a206c/40483127580.pdfIn PDF document text
    • https://webshopplus.nl/app/webroot/files/userfiles/files/soroxogawapi.pdfIn PDF document text
    • https://samsungdvmklima.com/upload/ckfinder/files/zofakavebijosozobikikaga.pdfIn PDF document text
    • http://langfordfinancialservices.com/userfiles/files/rewujepakegolam.pdfIn PDF document text
    • http://l-max.ru/userfiles/file/42572386357.pdfIn PDF document text
    • http://xn--tnqz8hz5cb8l.com/upload/files/64092838724.pdfIn PDF document text
    • https://fa-vietnam.com/webroot/img/files/mexokibokusufozutekasesu.pdfIn PDF document text
    • http://peknanevesta.sk/media/file/74447566941.pdfIn PDF document text
    • http://sintellect.ru/Repository/file/9022207531.pdfIn PDF document text
    • https://arnetbilgisayar.com/upload/ckfinder/files/44783131216.pdfIn PDF document text
    • http://originalbau.hu/imagesfiles/17304237075.pdfIn PDF document text
    • http://chanassociation.org/uploads/file/3069240439.pdfIn PDF document text
    • http://yjeverspeed.com/userfiles/file/fufoni.pdfIn PDF document text
    • http://anapharmata.hu/ckfinder/core/connector/php/files/4338976824.pdfIn PDF document text
    • http://baby-daycare.com/uploads/files/202109111206292908.pdfIn PDF document text
    • https://adtw1.elfjane.com/ckfinder/userfiles/files/37654700500.pdfIn PDF document text
    • http://vhz.cz/user-files/6404508523.pdfIn PDF document text
    • http://airmon.hu/images/files/42068560905.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/4d655d97811b2b30882e88d0e8fb6dd3/kipixa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=phone+check+diag+appPDF 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_off0000b271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB271 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ca83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA83 16132 bytes
SHA-256: 73415fbe90c7bdca141dccdef919c40a1b539f29342a4d56ab61628758c3bef6
font_02_sfnt_off0000f33f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33F 10476 bytes
SHA-256: 3951d0044bf2789295389e9cc9828a8133838ba376e6e10bab3e1950a02aa6cd