PDF malware analysis — malicious · be3c99ab460216a2

MALICIOUS

PDF

82.6 KB Created: 2021-09-05 11:24:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: 1f3b78c52e9c4463d5cd2ee5db0f7462 SHA-1: 4a9469ed1d0412404f76f9725029bb97ff21e489 SHA-256: be3c99ab460216a268a39c215a4aa2e25baebbc80f964ead154b388393f29f9d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to disposable domains and compromised CMS upload locations, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing lure designed to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9917

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 http://hotdeals24x7.com/ci/userfiles/files/98752096197.pdf In PDF document text
- http://jarauwerdaenzn.nl/userfiles/file/nosowutigewewololat.pdfIn PDF document text
- http://rentbucharest.net/images/userfiles/80074142034.pdfIn PDF document text
- https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/ic7go1vq9gpd4hjo3mopgnaqtl/meboborezoj.pdfIn PDF document text
- http://floridadressyourhome.com/uploaded_files/userfiles/files/xizimekafosovokofejasawi.pdfIn PDF document text
- https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/db1a3565f5240a6036207f652b0f7dfb/2097924202.pdfIn PDF document text
- http://smartickgroup.com/userfiles/21510853876.pdfIn PDF document text
- http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/wojoxalexatonutefe.pdfIn PDF document text
- http://gourmethousemacau.com/UploadFilesfile///52991239490.pdfIn PDF document text
- http://foto-recepty.sk/images/fotky/55700168098.pdfIn PDF document text
- https://bataretak.com/img/files/file/61309178759.pdfIn PDF document text
- https://limmaginebistrot.com/file/govudanofetokiserasobux.pdfIn PDF document text
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//10036077174.pdfIn PDF document text
- http://unesco-mediain.cz/fckfiles/file/gebedaliriwegufarex.pdfIn PDF document text
- http://xn----7sbakn3aoflleitf3m6a.xn--p1ai/userfiles/file/29562986924.pdfIn PDF document text
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160d9a7fda9fee---ziwopurozewuk.pdfIn PDF document text
- https://remont-bez-zabot.ru/files/file/649254067.pdfIn PDF document text
- https://vanphongphampmc.com/upload/files/labomasum.pdfIn PDF document text
- https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16070f459817f9---51145986033.pdfIn PDF document text
- http://sdes.in/uploads/82748906834.pdfIn PDF document text
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1722640957---roxogijafekudi.pdfIn PDF document text
- https://akconta.com/uploads/files/92785036338.pdfIn PDF document text
- https://aannemingsbedrijfbarthulsbosch.nl/userfiles/file/6938677575.pdfIn PDF document text
- http://dolupin.com/calisma2/files/uploads/zisoxelivu.pdfIn PDF document text
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160aa108c9fa25---29730800152.pdfIn PDF document text
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/a02549f1efc15b22992a7333cbb1da18/faxabojew.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=horror+stories+in+urdu+pdf+free+downloadPDF 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_off0000d703.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD703	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ef15.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF15	20600 bytes
SHA-256: `f1873b0ccd5ead85ab06c805cb05f9b9b977f8be4e8b887b0216f9f4b1acfda1`
`font_02_sfnt_off00012399.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12399	10668 bytes
SHA-256: `8c9a30f89c90c2c290dc14298cecba236831f125f5bd24a2c801db042aefb6ff`

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