Malicious PDF — malware analysis report

Static analysis result for SHA-256 f996a5e571708cbc…

MALICIOUS

PDF

233.9 KB Created: 2022-03-16 03:33:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 240b3298a32b84343b31810066011018 SHA-1: f1ec053d747b53587cc9063dd0d156aabba4eb89 SHA-256: f996a5e571708cbc9db72e3e5a398a0923c4791a293c37d8e4326456ce7e9b73
174 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and external links, with a high-confidence heuristic indicating a lure for free software downloads via an SEO redirector. The ML classifier and ClamAV detection further support its malicious nature. The embedded JavaScript likely facilitates the download and execution of a second-stage payload, contributing to the overall phishing and potential malware delivery objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7045

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://fecuq.co.za/XSRYdR1H?utm_term=adobe+xd+for+windows+8.+1+free PDF link annotation
    • http://bilasiparacollege.org/assets/kcfinder/upload/files/rabezolelixarigobapi.pdfIn PDF document text
    • https://fda.weblineinfosoft.com/UserFiles/files/zimanezukeguxovitabe.pdfIn PDF document text
    • http://aven.su/userfiles/file/97522788088.pdfIn PDF document text
    • http://3e-recycling.ru/app/webroot/filesfiles/dipusotuputezanini.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16212a15291ff2---7884037479.pdfIn PDF document text
    • http://www.kirmatas.org.tr/kcfinder/upload/files/91126354490.pdfIn PDF document text
    • http://gsest.com.sa/ckeditor/kcfinder/upload/files/68813642379.pdfIn PDF document text
    • http://bernievet.ro/kcfinder/upload/files/lamegavogonefitig.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/a8e7e633ea130f247e7d9d308cdb02a8/22734592918.pdfIn PDF document text
    • http://chunzucn.yun2u.cn/upload/files/54310265481.pdfIn PDF document text
    • https://www.krenzle.sk/editors/ckeditor/plugins/kcfinder/upload/files/pisedofosoj.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/sigupujuzavotofomirivoki.pdfIn PDF document text
    • http://kirpichi.su/kcfinder/upload/files/vedekixefadojenajup.pdfIn PDF document text
    • http://eschool365.in/js/admin/uploadfiles/file/gupukopaxifo.pdfIn PDF document text
    • https://thedigitalsystems.com/userfiles/file/movajubevudete.pdfIn PDF document text
    • http://bahiratpatil.com/kcfinder/upload/files/90979939802.pdfIn PDF document text
    • https://nasco-ye.com/uploads/file/xitasiwanopelu.pdfIn PDF document text
    • http://xn--23-7lc6a.xn--p1ai/public/file/napafexap.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/86644922577.pdfIn PDF document text
    • http://aci-immobilier-douai.fr/userfiles/files/zilegejaboposewedoniva.pdfIn PDF document text
    • http://sinice-rasy.cz/files/file/jidebobix.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/nq306p6r2e3rjcgg7f8ohlkdaud3eiih/83616365937.pdfIn PDF document text
    • http://arndt-fahrschule.de/userfiles/file/19973315731.pdfIn PDF document text
    • https://dharmagold.in/kcfinder/upload/files/navorefufabo.pdfIn PDF document text
    • http://rlmlaw.com/images/edit_images/file/dagotubi.pdfIn PDF document text
    • https://easb-bd.org/public/files/assets/ckeditor/kcfinder/upload/files/belamem.pdfIn PDF document text
    • http://traiteurluc.com/userfiles/file/zozalojuxavapuwaminogitik.pdfIn PDF document text
    • https://goldenlinejsc.com/userfiles/file/7744155450.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16221c46dcdc92---34588624798.pdfIn PDF document text
    • https://mashura.co/userfiles/files/jedisonodil.pdfIn PDF document text
    • https://shunnasato.com/fafolegedukinesusivulujeg.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/q033h2dmg3niv8eniml0nnvr76/fubejinipixewufemakez.pdfIn PDF document text
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003187b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3187B 10676 bytes
SHA-256: 6ff3ee8e94e9e8ad2232104dfb3d9e173536773e7462a81f504292265908b528
font_01_sfnt_off00033128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33128 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00034842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34842 16220 bytes
SHA-256: 207eb3b51995adbdef2a766e0364e2c2ee182a7f0f0647c12a4a3807efc046f6
font_03_sfnt_off00035e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35E22 22052 bytes
SHA-256: 7f7dc6477e4b1e2b44adec1f5dc64a51828164827d905186037b760d7989fca0