PDF malware analysis — malicious · 72b5636ab658b83f

MALICIOUS

PDF

460.8 KB Created: 2022-01-15 20:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28

MD5: c2b1f8d8381a6a907e43c5d9b97d5a40 SHA-1: 83d66f5d41bb0f0d0e9492cef23ddc3642b3d1db SHA-256: 72b5636ab658b83f68b1935624dc1cfdef8642c9cba8cf77bb93aa6958bc1ab7

174 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.5736

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 http://agarimo.com/archivos/archivos/85238890768.pdf In PDF document text
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/8bce3edb3155957a62f5234f77b4038c/35678204702.pdfIn PDF document text
- https://adsbudget.net/userfiles/file/tomisojuvano.pdfIn PDF document text
- https://jeevadhara.org/work/london/userfiles/file/90974707329.pdfIn PDF document text
- https://alice-immo.com/userfiles/file/73849327536.pdfIn PDF document text
- https://ww150007.linebot.net/upfile/files/20210918100955.pdfIn PDF document text
- http://ktcz.eu/files/files/fagowomumeze.pdfIn PDF document text
- http://lk-atomexpo.ru/web/js/kcfinder/upload/files/busumerusivulofesot.pdfIn PDF document text
- https://titishop.co/upload/files/vebikelomome.pdfIn PDF document text
- http://life-homeshop.buyout8.com/asset/uploads/files/wipenabatadowa.pdfIn PDF document text
- http://www.cenlafilm.com/siteuploads/editorimg/file/dofozulidow.pdfIn PDF document text
- https://projetounificado.com/uploads/files/2594603029.pdfIn PDF document text
- http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16169e1e57afb6---58645410340.pdfIn PDF document text
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/79cd5d9ee3aadc5c56357845fc5a83bd/7361848584.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f509b3f97fa42b81e58d92d68888eda8/96940895637.pdfIn PDF document text
- http://hakanhurdacilik.com/userfiles/file/40542875044.pdfIn PDF document text
- http://kovacsoltvaskerites.hu/images/file/3366946619.pdfIn PDF document text
- http://wannawwannie.pl/userfiles/file/27884192712.pdfIn PDF document text
- http://www.naraihillgolf.com/admin/userfiles/file/xelol.pdfIn PDF document text
- https://larioenergy.net/uploads/file/fodawaketiwaz.pdfIn PDF document text
- http://orchid-daikanyama.com/userfiles/file/juzasomaja.pdfIn PDF document text
- http://feedproxy.google.com/~r/Xvkpad/~3/BcFPVxLj4jw/uplcv?utm_term=shakespeare+sonnet+19+pdfPDF 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0006c63f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C63F	18016 bytes
SHA-256: `d7c94096498a1842fa6e8c4dffa134f16f6c94532111e08d432b72d36d45b37c`
`font_01_sfnt_off0006f4d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F4D3	10844 bytes
SHA-256: `0a24600dde8ce48dce47a566bd0cc9833e69b16b6a3be2e5b459d5914919813a`
`font_02_sfnt_off00070dde.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x70DDE	16416 bytes
SHA-256: `cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336`

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