PDF malware analysis — malicious · 793d84f30dba0f0c

MALICIOUS

PDF

74.8 KB Created: 2021-09-15 11:38:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15

MD5: bb1604e847e6bf598efac6087e975770 SHA-1: 20e046fc84c7df2d3472d47cd5842097a816ad6f SHA-256: 793d84f30dba0f0cefe57401770a79132c1d525659d53c0eff937afdc27f4412

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9942

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 https://queure.ru/uplcv?utm_term=ms+word+for+android PDF link annotation
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/f818qutgt61rubabu7ltd66gl8/mesozitenafufusijobadixe.pdfIn PDF document text
- http://fpole.ru/sadm_files/pilupuberadamujamopesi.pdfIn PDF document text
- http://bakefruit.com/uploads/files/202109080932489696.pdfIn PDF document text
- http://dpnovelty.com/upload/files/dolomifemoxateso.pdfIn PDF document text
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613625cfbc61f---gujanibokizawubumaxi.pdfIn PDF document text
- http://massimosusto.eu/userfiles/files/satedemezi.pdfIn PDF document text
- http://snbedu.com/uploadfile/file///2021091209473260.pdfIn PDF document text
- https://matricula.arendic.cl/files/zigetixan.pdfIn PDF document text
- http://caycanh.vn/images/fck/file/mimit.pdfIn PDF document text
- http://flemingdecal.com/uploads/assets/file/80089401881.pdfIn PDF document text
- http://forma8.kz/ckfinder/userfiles/files/61430735597.pdfIn PDF document text
- https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/326fb125ca1783d6e0e4a5ce0c1e69dd/nomaledokitagitafowir.pdfIn PDF document text
- http://samocvet.org/foto/ck/files/13510762608.pdfIn PDF document text
- http://kidneytracker.com/ckfinder/userfiles/files/jabelavabupiruxudorusebi.pdfIn PDF document text
- http://energosol.pl/images_cms/file/71307202130.pdfIn PDF document text
- https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/8bf1a7f743b93a54a4016db543660a92/35441836196.pdfIn PDF document text
- http://spalovnachemolak.sk/userfiles/file/bavibotoxulunulosexo.pdfIn PDF document text
- http://myhomeinparis.com/userfiles/files/gaxoposagixomixo.pdfIn PDF document text
- http://danangsculpture.com/uploads/image/files/11672428878.pdfIn PDF document text
- http://traslochimontalto.it/userfiles/files/17607208532.pdfIn PDF document text
- http://salsainkonstanz.de/media/files/11237119292.pdfIn PDF document text
- https://ymvii.com/admin/upload/files/rowujarosava.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b4ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB4CE	1860 bytes
SHA-256: `562d39cc93351683f3420870a5578826c1285db13c691c08f99be18f4980e560`
`font_01_sfnt_off0000bd84.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBD84	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000d596.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD596	18728 bytes
SHA-256: `85491f7396b7a5093f6e619cbd3d93f7098dd930fdf348b89659957a1985f3a9`
`font_03_sfnt_off0001070f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1070F	10152 bytes
SHA-256: `a7f5830f87d8286cff1898bcd2fd5869a643ad782cea81cada5e8efb746d46c4`

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