Malicious PDF — malware analysis report

Static analysis result for SHA-256 941b7fdc868d7343…

MALICIOUS

PDF

377.9 KB Created: 2022-01-01 15:28:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: fbf67e0dfbeb41121a1a8a2862118ab6 SHA-1: ae25bbf12dd0eae5749652dbcd8572727d88fe28 SHA-256: 941b7fdc868d73434bd6539d7c415f3f584f574969548ce8b86f310732ce418a
174 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and links to a compromised WordPress site, indicating an attempt to deliver a malicious payload. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' suggests the lure is for phishing, specifically disguised as a user manual. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8109

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://ashleymongolia.mn/uploads/files/fekavadufi.pdf In PDF document text
    • http://due.pt/js/ckfinder/userfiles/files/mavibiwolem.pdfIn PDF document text
    • http://safakkereste.com/kcfinder/upload/files/7030528832.pdfIn PDF document text
    • https://alexspa.kaszebe.com/userfiles/file/vafadisawibokagor.pdfIn PDF document text
    • http://fasson.vip/images/editor/files/lobamazitosepulekozipov.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1614ae17703e46---pulotubawekatovo.pdfIn PDF document text
    • http://sevvalturizm.com/rsm/files/bodizotulopibajuxipuxep.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/16181455780317---1049087238.pdfIn PDF document text
    • https://cfbadalona.net/ckdata/files/tekino.pdfIn PDF document text
    • https://iuoshili.com/upload/users/files/84358271527.pdfIn PDF document text
    • http://keralabiblesociety.com/fck_uploads/file/ketunafiw.pdfIn PDF document text
    • http://xn--h1agcmh.com/ckfinder/userfiles/files/fozona.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b942c10a52e---14475069210.pdfIn PDF document text
    • http://cnfglgreat.netsociality.com/upload/files/gutavenetijibuki.pdfIn PDF document text
    • http://beverly.kopanramen.com/uploads/files/kujinifogelete.pdfIn PDF document text
    • http://sinocelltech.com/filespath/files/20211014043149.pdfIn PDF document text
    • http://ouhkpthaa.org/userfiles/bemogamemilezi.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/161bfb4057bca7---lenebemetoputezizepe.pdfIn PDF document text
    • http://klimatyzacjaradom.pl/userfiles/file/57746035324.pdfIn PDF document text
    • http://xn--j1aii.su/userfiles/file/kutelarikenatan.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1616c587d10e63---97691341337.pdfIn PDF document text
    • http://abdon.madteam.net/ckfinder/userfiles/files/19198241065.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RC0zOYPQW8A/uplcv?utm_term=pfms+user+manual+in+tamilPDF 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_off00057c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C05 10356 bytes
SHA-256: 2c8a5e539aee33d6e1b80b67a0fdd6a6619f7a4a6c170fe06523c719b604b18c
font_01_sfnt_off00059357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59357 18016 bytes
SHA-256: 0e29f1050c44999a7b0cec3c7cc38e26fe55841a16b1bb4168d6e05970fb898a
font_02_sfnt_off0005c21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C21D 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336