Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca65cb6d1e254427…

MALICIOUS

PDF

568.2 KB Created: 2022-03-24 02:54:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-07
MD5: d2d866d960a166914a04bb2afca6df93 SHA-1: 4e7e454e6e13b8f283f8ca93d731bbe0d46f064c SHA-256: ca65cb6d1e254427b119a0215f054d2e352b1ef33b594bc9ceecff04be554be5
161 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4310

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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://wirut.co.za/XSRYdR1H?utm_term=escudo+de+torre+medivia PDF link annotation
    • http://deauville.ru/files/file/tasipibad.pdfIn PDF document text
    • http://polsko-slowackieporozumienie.cci.pl/userfiles/file/misokimavupajukelu.pdfIn PDF document text
    • https://cheeselicious.net/UserFiles/file/85525125076.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/70383436871.pdfIn PDF document text
    • http://hongshengfish.com/uploadfiles/20220304/220304074815194058gcijtxgfnbjh.pdfIn PDF document text
    • https://nesselaarbestratingen.nl/plaatjes/file/11974245636.pdfIn PDF document text
    • http://shijijiaming.net/filespath/files/20220303051515.pdfIn PDF document text
    • http://drdj.friend-match.com/upload/files/90176378231.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/162275c6f731a9---bumagefivuwujon.pdfIn PDF document text
    • https://huangs.tw/uploads/files/202203071954174163.pdfIn PDF document text
    • https://wiercenie-studni24.pl/files/files/lawezotudopebaf.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/e1d7ddb96715febf9cf1ff26e1b422df/xiwizeva.pdfIn PDF document text
    • http://ipceurope.eu/assets/file/39831339693.pdfIn PDF document text
    • https://ssp.by/var/upload/nisapupagebogileviluwu.pdfIn PDF document text
    • https://macjiboter.macjahisa.si/files/file/fonedegune.pdfIn PDF document text
    • https://macintosh-szerviz-javitas.nuttydog.hu/ckfinder/userfiles/files/vunulovitekurifuvidili.pdfIn PDF document text
    • http://advocaciaciervo.com/kcfinder/upload/files/boduzotimutapijuxak.pdfIn PDF document text
    • https://terminarz.online/kosmetyczka/krakow/files/mekaribifiragijudixesitud.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/b9aa0ee5d12e2e6dc1ca99e97598700d/76302975413.pdfIn PDF document text
    • https://vasekupony.sk/jsc/kcfinder/upload/files/96911015028.pdfIn PDF document text
    • https://pesonabali.dswip.com/ci/userfiles/files/ronuvagubefenewatenuziz.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fde72489093---591822112.pdfIn PDF document text
    • http://canxetaianhduc.com/images/file/35731926716.pdfIn PDF document text
    • http://jobsandhi.com/uploaded_files/userfiles/files/todixarekalo.pdfIn PDF document text
    • https://aildf.in/userfiles/file/37912744820.pdfIn PDF document text
    • http://online-editor.menu-card-maker.com/uploads/files/68702277804.pdfIn PDF document text
    • http://asfalon.com/__files/file/87223838053.pdfIn PDF document text
    • http://luatsubienhoa.com/upload/ck/files/56519963771.pdfIn PDF document text
    • http://qzmrmfhyxh.com/upload/file/85109698308.pdfIn PDF document text
    • https://www.swaraagmusic.com/public/templateEditor/kcfinder/upload/files/20454017251.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/74419404210.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 extracted file (font_00_sfnt_off00085d64.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00085d64.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00085d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D64 22960 bytes
SHA-256: 6431a7155c69d133df018cee260f2aeadd28eeb3749d3c40723ad48a8ea30883
font_01_sfnt_off00089876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89876 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0008af96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF96 10528 bytes
SHA-256: 21d3c91b59092afdb23faf097d340df1e8f37655bbe9d81a76a7f56892f77a3b
font_03_sfnt_off0008c7a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7A2 1696 bytes
SHA-256: 28c5bcedffb0f63c0f18ed07264126f7c833899b916de9a351f9850be7cb6bae