PDF malware analysis — malicious · d8f77d72eb7b1b44

MALICIOUS

PDF

85.2 KB Created: 2021-06-26 20:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 909e59e3dd31787fde7eda045936fcdc SHA-1: 8791f6eadc21af492f3814c26e257ea73b2e5be5 SHA-256: d8f77d72eb7b1b44119daa8227118d6b51cad59fc4e2dfe939d0875d7e90aa2b

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, containing numerous URLs that point to external websites, some of which are hosted on compromised WordPress installations. The presence of 'utm_term' parameters in some URLs suggests a tracking or campaign-oriented purpose, likely to lure users into clicking malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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
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://garglob.ru/uplcv?utm_term=exclamation+marks+in+emails PDF link annotation
- https://porterbrothersltd.com/app/webroot/uploads/lurulemaxosibe.pdfIn PDF document text
- http://clinicaveterinariabilancino.it/userfiles/files/jipizavali.pdfIn PDF document text
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e59b32048---lemikapagojapa.pdfIn PDF document text
- http://yjsyrj.com/userfiles/file/bupovanu.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d25054d7676---89307349067.pdfIn PDF document text
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d61aca640---jugal.pdfIn PDF document text
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/c35ea5e2162178cf8659bb1ea4121660/xiradivumosimuzorivabixo.pdfIn PDF document text
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160788d65e56dd---jaworudidakuxomojisozime.pdfIn PDF document text
- http://ats-dz.com/userfiles/file/33740312970.pdfIn PDF document text
- http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mejasosidonir.pdfIn PDF document text
- https://atl-50.com/files/file/moxamuwategoto.pdfIn PDF document text
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085159f2d736---80451027268.pdfIn PDF document text
- http://adveotec.com/img/file/nilepo.pdfIn PDF document text
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/07d9962b2fef8c5fb21a031491049692/dudijijulunexo.pdfIn PDF document text
- https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/55fc471a7608755d30766eeac18abb98/gowupuwowu.pdfIn PDF document text
- http://aiswaryamatrimonials.com/fck_uploads/file/teperij.pdfIn PDF document text
- https://sharadsangam.org/UserFilesTwo/file/mutawejapejinilive.pdfIn PDF document text
- https://immo-cjeanpaul.lu/userfiles/files/2664448108.pdfIn PDF document text
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/722122f6221c7ace1abb0c33b925a4da/faruwanegezebomimize.pdfIn PDF document text
- https://roeveragri.ac.in/wp-content/plugins/super-forms/uploads/php/files/6786d18414a087b39c97a0189c0701ef/41246771651.pdfIn PDF document text
- https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/d979b554372ca93265c52cb58ce86db7/64062758237.pdfIn PDF document text
- https://abeess.com/userfiles/file/70993960285.pdfIn PDF document text
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087bb4bcb6bb---78975647055.pdfIn PDF document text
- https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/9fd40cc47d5b53bf012d6174506fe161/44798027928.pdfIn PDF document text
- http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160964219ec616---1838694341.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e979.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE979	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0001018b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1018B	17064 bytes
SHA-256: `7e361f3851092e9553519062434cd10c953cbb11a58cced7b0b816a2102edc5b`
`font_02_sfnt_off00012df5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12DF5	10568 bytes
SHA-256: `52ed895f745b14a351dab4eaa2a253d8de00025700afe83d4515bdc5b57ed23a`

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