Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff277d7ad7477d61…

MALICIOUS

PDF

295.5 KB Created: 2022-04-30 11:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-14
MD5: fff015f539ba0ccecfeae131ea0664df SHA-1: 41ef891b1cc5dfd5afcb5db173c3ab63610ff858 SHA-256: ff277d7ad7477d617daf63e57ae53d9634527494b24dbefd9c73c4e48fcfeebf
161 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6397

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
  • 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 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://wekowegalovu.weebly.com/uploads/1/3/4/6/134668649/vafafed.pdf In PDF document text
    • http://fmi.lu/userfiles/files/72066082901.pdfIn PDF document text
    • http://marinaxaraes.com.br/ckfinder/userfiles/files/46678120987.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1620791e3cdf34---67875866807.pdfIn PDF document text
    • http://kiiga.ru/userfiles/file/votezisabad.pdfIn PDF document text
    • https://xinozujo.weebly.com/uploads/1/3/0/8/130874257/wesipuxeka_zukivegofibu.pdfIn PDF document text
    • https://sutikarojujo.weebly.com/uploads/1/3/4/3/134343437/4db6f5fb99e1ee.pdfIn PDF document text
    • https://xemivigezeb.weebly.com/uploads/1/3/4/4/134481563/1970655.pdfIn PDF document text
    • https://www.phutungnganhmay.com.vn/kcfinder/upload/files/gedasavibefozap.pdfIn PDF document text
    • http://hqshop24.com/userfiles/file/bejupo.pdfIn PDF document text
    • https://gozezitigaja.weebly.com/uploads/1/3/4/3/134340412/pasifobizor.pdfIn PDF document text
    • https://zawawileniweja.weebly.com/uploads/1/3/5/3/135317922/tefosuwi.pdfIn PDF document text
    • https://gevupuwelado.weebly.com/uploads/1/3/4/8/134894118/gamufarovopine.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2022-2-8/20220208190819498931.pdfIn PDF document text
    • http://unseenadventure.com/userfiles/file/67816767482.pdfIn PDF document text
    • https://ccs-corporation.com/ckfinder/userfiles/files/fonowofader.pdfIn PDF document text
    • http://kimdaiphatsteel.com/Images_upload/files/2106156285.pdfIn PDF document text
    • https://aydinhirdavat.com/panel/kcfinder/upload/files/bagabevegu.pdfIn PDF document text
    • http://eshs.cz/www/kcfinder/upload/files/4221304223.pdfIn PDF document text
    • http://www.yoko-ono.be/images/userfiles/file/53258579920.pdfIn PDF document text
    • https://kebolegenadudus.weebly.com/uploads/1/3/1/4/131454121/5929312.pdfIn PDF document text
    • https://subarijarasojud.weebly.com/uploads/1/3/4/3/134332778/e3316c85930b584.pdfIn PDF document text
    • https://poulinstrapscan.com/userfiles/file/dorovon.pdfIn PDF document text
    • https://mvfht.ca/kcfinder/upload/files/6181472484.pdfIn PDF document text
    • https://kuwobudub.weebly.com/uploads/1/3/4/5/134587752/19b180e0b6ba2b2.pdfIn PDF document text
    • http://heatexchangersolution.com/upload_fck/file/2022-3-10/20220310215913850075.pdfIn PDF document text
    • https://xojovirasada.weebly.com/uploads/1/3/1/6/131637125/76966e.pdfIn PDF document text
    • https://finolija.weebly.com/uploads/1/3/4/6/134625313/wezosokixevijuzizagu.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/20223137233586.pdfIn PDF document text
    • https://likixulojuxe.weebly.com/uploads/1/3/4/3/134386003/3097154.pdfIn PDF document text
    • http://upnbkk.com/file_media/file_image/file/74444816633.pdfIn PDF document text
    • https://duzedeguk.weebly.com/uploads/1/4/1/4/141489103/zanevanojapewid-jufaluxezuz-pozoji-sorerewuzujoxi.pdfIn PDF document text
    • https://mixunolonuwoja.weebly.com/uploads/1/3/0/9/130969204/peborax.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/mivisoxizelufabisik.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=bully+bullworth+academy+androidPDF 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 (stream_005_off000450f3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_005_off000450f3.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000450f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x450F3 20504 bytes
SHA-256: 044a09cd5117c30baeaaf3cbb9ec9f19aeffeb5da2d9d3c13fbb38e9c9d9a9fd
font_00_sfnt_off0003ff2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FF2F 22488 bytes
SHA-256: a63384e636b6fa8263b0064da6445de3e8c7c7b181c6c506f11f947152008e28
font_01_sfnt_off000438e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x438E2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0004748e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4748E 10960 bytes
SHA-256: 8fc71593910ea53b71919b8b3fa117059839dc9eba4ef3e1e0b14fff9c1cdded