PDF malware analysis — malicious · b85234eecaca25f7

MALICIOUS

PDF

213.5 KB Created: 2021-07-13 06:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: 3e04249099181c7fd736a8dcac7b95d4 SHA-1: f2083d28a425fc14a8c88450172a1e080234c37e SHA-256: b85234eecaca25f750e7d3b8042450c6e5e373874652a8f46741999b093b2bc2

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by ClamAV as a phishing trojan. Heuristics indicate it contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9926

Heuristics 5

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.
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://merydian.pl/nowymerydian/userfiles/file/59148296334.pdf In PDF document text
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d5b9f0e515e---48051409032.pdfIn PDF document text
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/0f13ec66d53787ee52c5bac5d8c0e3cc/rakalokegijefufolujego.pdfIn PDF document text
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/cdpegjceanog0ao87r3g5hik47/70203449370.pdfIn PDF document text
- http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff94286d3e---23835049435.pdfIn PDF document text
- https://masini-de-ambalat.ro/images/userfiles/3484471260.pdfIn PDF document text
- http://paramountswimwear.com/userfiles/files/rikipulote.pdfIn PDF document text
- http://movitecnic.fr/ressource/site-image/files/nojapojoxiluwupomaxekik.pdfIn PDF document text
- http://www.centralperdana.com/file/sozuwujemimoge.pdfIn PDF document text
- https://bd-sokolovska.eu/userfiles/file/71071405018.pdfIn PDF document text
- http://hevolta.com/upload/file/kavukenulenidu.pdfIn PDF document text
- https://arab-hams.com/Ups/files/webufubona.pdfIn PDF document text
- http://lumieretvie.com/userfiles/file/15966827657.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/nuhetcf5dcq5h10pt1975q09gs/tubem.pdfIn PDF document text
- http://ingenermarket.ru/userfiles/10765919791.pdfIn PDF document text
- https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b8df457580a---84842760744.pdfIn PDF document text
- http://buddhavehicle.com/userfiles/file/wiropixujagad.pdfIn PDF document text
- http://daimarconstrucciones.com/images/admin/file/41656025040.pdfIn PDF document text
- https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/b3821c07d7cd9ddccf1ba0926f8f7327/80005978096.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6bd3f563a8---giwiretodoxojipulufod.pdfIn PDF document text
- https://www.domaine-vrignaud.com/ckfinder/userfiles/files/98879000039.pdfIn PDF document text
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c00c8de9b2---kufenagazila.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=god+does+not+give+you+a+spirit+of+fearPDF 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_off0002cfd3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2CFD3	34932 bytes
SHA-256: `b4bd25c12f47027e4ed05694c21fcfdda59c4143fd5945110b6e689124da0a46`
`font_01_sfnt_off0003167d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3167D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00032e94.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32E94	10948 bytes
SHA-256: `f659f1f10165d744f8e642ae16d89b0ec14fe5479b1e671267d57e09c2694514`

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