Malicious PDF — malware analysis report

Static analysis result for SHA-256 544bde3f75e8d6ed…

MALICIOUS

PDF

274.8 KB Created: 2022-06-06 09:31:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-25
MD5: 9944b1523ff11563f99f5287e706a65a SHA-1: 32e0b4eeb09e6d37f49b4cad956497a80a7c4a2b SHA-256: 544bde3f75e8d6edbdf83e903f04cc3ecb55fb535b28a25f78cfa51aa88130b8
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6731

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
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • 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://kimbuunguyen.com/uploads/userfiles/file/jewutilomizejokosezalog.pdf In PDF document text
    • https://tuyendung.vinaonegroup.net/upload/files/19169090504.pdfIn PDF document text
    • https://bogovimageji.weebly.com/uploads/1/3/4/5/134509337/f8f6b99d6.pdfIn PDF document text
    • http://tractortools.cz/ckfinder/userfiles/files/vejavakovobobatirafozub.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/21158142276.pdfIn PDF document text
    • http://mgtuae.com/uploads/file/ruwopagosip.pdfIn PDF document text
    • http://metalzilembo.it/userfiles/files/zijugarakugebi.pdfIn PDF document text
    • https://nikosdimos.gr/userfiles/file/voximokivuwup.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1625be1f4d6bca---87837526796.pdfIn PDF document text
    • https://dazomutatif.weebly.com/uploads/1/3/4/7/134729749/tejezemapigif_pekozitiripuje_xofabiwotuzake_witetabafi.pdfIn PDF document text
    • http://narcisse.sk/editor_uploads/files/46837864165.pdfIn PDF document text
    • http://clinicaveterinariailmarzocco.it/userfiles/files/folonevubopevimil.pdfIn PDF document text
    • https://tuvonakoj.weebly.com/uploads/1/3/4/7/134733126/3352195.pdfIn PDF document text
    • http://ricarda-allegra.de/userfiles/file/bupuzegaxegimalofa.pdfIn PDF document text
    • https://tonewebebajuja.weebly.com/uploads/1/3/5/3/135319275/03719e5a0717.pdfIn PDF document text
    • https://podzamcze-dobczyce.pl/admin/kcfinder/upload/files/55350000480.pdfIn PDF document text
    • https://motelandratecuci.ro/userfiles/file/64833003344.pdfIn PDF document text
    • http://donghobaoan.com/uploads/files/83880537457.pdfIn PDF document text
    • https://zomerschoolhaarlem.nl/UserFiles/files/66054994390.pdfIn PDF document text
    • https://ehilteknik.com/uploads/files/kadureziwajijatetipigib.pdfIn PDF document text
    • https://www.insideaccess.lk/assets/js/kcfinder/upload/files/76580255869.pdfIn PDF document text
    • https://gratuit.kidilangues.fr/js/kcfinder/upload/files/79945902847.pdfIn PDF document text
    • http://dgone.kr/userfiles/file/20220524055445.pdfIn PDF document text
    • http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/virajizibekarafimiwez.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1624a38caeb7f6---15483015511.pdfIn PDF document text
    • http://vasekurzy.cz/userfiles/file/41508813533.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1627d88af90561---5875024304.pdfIn PDF document text
    • http://ahrestygz.com/userfiles/files/20220426_235708.pdfIn PDF document text
    • https://hoya.mobioptika.hr/UserFiles/file/jezovasipolum.pdfIn PDF document text
    • https://gutavavoz.weebly.com/uploads/1/3/4/0/134000423/jetaxonesuzata-dubelemuraxolin.pdfIn PDF document text
    • https://cape-electronics.com/media/file/37466297870.pdfIn PDF document text
    • http://nelly-design.ru/upload/files/2570443994.pdfIn PDF document text
    • https://dimenafepog.weebly.com/uploads/1/4/1/2/141221168/63af431425fd73d.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=cat+740+articulated+dump+truck+manual+pdf+online+booksPDF 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 extracted file (font_00_sfnt_off0003d55d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003d55d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003d55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D55D 19320 bytes
SHA-256: adebd77e8b694166980c6b7a4e71cb8a578cafcb75dfff25447538e68c7213de
font_01_sfnt_off0004086a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4086A 11392 bytes
SHA-256: b6e3a63398fe4bcae0cc6ebbe4942be83d3716b4e1a000b20f0af659b7c6cae6
font_02_sfnt_off00042328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42328 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1