PDF malware analysis — malicious · 4026af1e7d54901f

MALICIOUS

PDF

84.8 KB Created: 2021-07-03 10:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31

MD5: bce8046cf1ac769929caa05a24bcf204 SHA-1: bd0624b8fb95a0f117a850eb7407a227542af625 SHA-256: 4026af1e7d54901f0eec01fd8878f2b75b7408e48fd4bc864ba40f7ab9681a0c

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and is identified as a link farm, likely intended to direct users to malicious websites for phishing or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the nature of the PDF and its embedded links suggest it is designed to exploit users through indirect redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9860

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://oniceh.ru/uplcv?utm_term=types+of+plagiarism+in+academic+writing PDF link annotation
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608daaee9514f---7366351425.pdfIn PDF document text
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/cc92c81d74c82679b089675c282356f2/bifukekinoraxub.pdfIn PDF document text
- http://btc-ltd.com/upload/file/76706104597.pdfIn PDF document text
- http://bigandtallking.com/userfiles/file/sepufasatis.pdfIn PDF document text
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/a8bac7d8bd10aab140930ee4b4d664b6/17189726982.pdfIn PDF document text
- https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099411c8ade3---gopiteke.pdfIn PDF document text
- https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6de077311---nujolukowatil.pdfIn PDF document text
- https://bestcoloringpages.com/userfiles/file/kunapuvax.pdfIn PDF document text
- http://duepassidalcentro.it/userfiles/files/95058900430.pdfIn PDF document text
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/itl1gn1v028n1o36kikk7iq5l1/favitavoxukomepavi.pdfIn PDF document text
- http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a982a97af2e---mogefijonazomu.pdfIn PDF document text
- https://ildiko-szepsegszalon.hu/userfiles/file/98015389151.pdfIn PDF document text
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/b89b0c68e6c46ae1a018f6a44ebeba7f/ropeniwibonula.pdfIn PDF document text
- http://isagenixmakessense.com/ckfinder/userfiles/files/xuwuvuvinevajuz.pdfIn PDF document text
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9317d04c66---78859080791.pdfIn PDF document text
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/99crpnsm751fl0kjogsv8g40v2/ribifugixevituvukinepele.pdfIn PDF document text
- http://cepsagibyachtfuels.com/images/photos/10763981809.pdfIn PDF document text
- https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2293ee9590---60227967639.pdfIn PDF document text
- https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/a7ca9a80a2f198c100bb631139f0e1f5/nugamilipoguguziruku.pdfIn PDF document text
- http://henca.com/files/details/file/vufujutomaw.pdfIn PDF document text
- http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160896c04696ff---84885373926.pdfIn PDF document text
- https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/50jh99iaq3h3dakmejmdnc3pt5/31415002346.pdfIn PDF document text
- http://soflocops.com/clients/67403/File/kewekizonomi.pdfIn PDF document text
- http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/ohp5v0ba45ba94rmnvhbnncbj6/3248694165.pdfIn PDF document text
- http://yeosingol.com/FileData/ckfinder/files/20210610_D249B7E82FEC5A3C.pdfIn PDF document text
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c05f7724d4---65673202046.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_off0000e978.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE978	16416 bytes
SHA-256: `1a668aa3d9b1f707be8d42ff1581a6e22d253ec67a96c9eeca333ec81e094966`
`font_01_sfnt_off000113e6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x113E6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012bfd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12BFD	11128 bytes
SHA-256: `3ba505bc0062d40ec1261ec086509a6cd46978f35623f2b58b1c7a5b01f41d43`

Open this report in the interactive analyzer, or submit your own file for analysis.