Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99b6712c371acad…

MALICIOUS

PDF

385.4 KB Created: 2022-04-10 03:45:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: a5dad984379d06a2ad9e1d2d626afa86 SHA-1: 92a44ff012774a166a631e326778706a004e7ba5 SHA-256: f99b6712c371acad7b27ed8dfebf40ddc6888e1a1d9c1f8a0e7f5acb0d21434a
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and external URIs, indicating it is designed to execute malicious code or redirect the user to a phishing site. The high-risk heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' specifically points to a phishing lure disguised as a free download. The ClamAV detection further confirms its malicious nature, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6338

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.
  • 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=all+japanese+adjectives+list+pdf PDF link annotation
    • http://rajasthanmetals.com/userfiles/file/jexawebuziruji.pdfIn PDF document text
    • http://worldwidestationeryholdings.com/files/file/68911576192.pdfIn PDF document text
    • https://fatononatigomun.weebly.com/uploads/1/3/4/8/134846471/8285553.pdfIn PDF document text
    • https://feredelulewijun.weebly.com/uploads/1/3/2/6/132681536/8764635.pdfIn PDF document text
    • https://kingsnews.org/app/webroot/js/image/files/pidebutux.pdfIn PDF document text
    • https://mokhalasati.com/userfiles/files/joguvar.pdfIn PDF document text
    • https://xokiguju.weebly.com/uploads/1/3/4/6/134679394/161141257b09a81.pdfIn PDF document text
    • https://gunupilerupuva.weebly.com/uploads/1/3/1/8/131871796/4548278.pdfIn PDF document text
    • https://boridijuj.weebly.com/uploads/1/4/1/3/141314121/tifapibekuv.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/45692942524.pdfIn PDF document text
    • http://ieltsadd.ir/cache/fck_files/file/28350843086.pdfIn PDF document text
    • http://prometric.ir/admin/upload/files/sozuduxixagud.pdfIn PDF document text
    • https://kulitexujaw.weebly.com/uploads/1/3/4/0/134099612/5255023ad.pdfIn PDF document text
    • https://tatelemu.weebly.com/uploads/1/3/1/1/131164239/jobixebuburuguwanudi.pdfIn PDF document text
    • https://gojafone.weebly.com/uploads/1/3/4/8/134891791/5119869.pdfIn PDF document text
    • https://lipopujowojirew.weebly.com/uploads/1/3/1/4/131408954/nodenilebekiwimop.pdfIn PDF document text
    • http://epodhajska.eu/UserFiles/File/zodipijojeluwabujot.pdfIn PDF document text
    • https://valetakomo.weebly.com/uploads/1/3/4/0/134012509/9ba58e6b08b8.pdfIn PDF document text
    • https://ebmcordelles.progess.com/userfiles/file/9101861098.pdfIn PDF document text
    • https://raxabebawozovi.weebly.com/uploads/1/3/4/3/134311701/sirasik-wuborepisakub-begivoji.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/0f10e68f61c42ddc13b63af4bfd322a4/mefajone.pdfIn PDF document text
    • https://jabapimodixo.weebly.com/uploads/1/3/5/3/135314731/dezikerufuxupop.pdfIn PDF document text
    • https://ripodomix.weebly.com/uploads/1/3/0/7/130775876/gadaj.pdfIn PDF document text
    • https://netwindowvn.com/uploads/userfiles/file/berugiligokuvumamaw.pdfIn PDF document text
    • http://www.lovebliss.tw/UserFiles/files/57505577308.pdfIn PDF document text
    • https://livesagu.weebly.com/uploads/1/3/1/4/131437401/pedixuxake.pdfIn PDF document text
    • https://lulotileja.weebly.com/uploads/1/3/0/8/130873917/ff4551ac33368f.pdfIn PDF document text
    • https://tuzufivogov.weebly.com/uploads/1/3/7/5/137518576/toranijimanovav.pdfIn PDF document text
    • https://rovividupezudu.weebly.com/uploads/1/3/4/3/134373795/rudojo.pdfIn PDF document text
    • http://ventima.ru/userfiles/file/tuzulotijumizog.pdfIn PDF document text
    • http://paten.kuduskab.go.id/packages/upload/kcfinder/upload/files/16541172423.pdfIn PDF document text
    • https://gusemotasejodab.weebly.com/uploads/1/3/2/7/132741535/e8f0845da.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1624d2f2328816---tuxuweruwotesafevarakitu.pdfIn PDF document text
    • https://dekizojumuleje.weebly.com/uploads/1/3/4/1/134133140/jobemumimep-wakojasod-vunozowuxawibo-numebilipib.pdfIn PDF document text
    • https://ragivigelogupow.weebly.com/uploads/1/3/4/5/134525503/465879.pdfIn PDF document text
    • https://lukadivosegiga.weebly.com/uploads/1/3/4/6/134679105/8559650.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/162028bfebb210---3144872121.pdfIn PDF document text
    • https://lightningriskassessment.com/ci/userfiles/files/natudowasoludawuvuxud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000592c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x592C3 19408 bytes
SHA-256: ab1c7900caee556bd6f6525b877e4325131d3f3ae2381e4fc34fe8ad69bcae6b
font_01_sfnt_off0005c594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C594 10572 bytes
SHA-256: f14d386767afa1d58c84f078e627698970046360f7e7ee0bf211d9960bf9d2a0
font_02_sfnt_off0005ddd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDD6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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