PDF malware analysis — malicious · d6d34fd6c0d64750

MALICIOUS

PDF

81.6 KB Created: 2021-09-05 21:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: ef91fa49d28d3c30598e4a85db5a447c SHA-1: 6e0e08b41a5be71184fa1b791da0d339926a3d15 SHA-256: d6d34fd6c0d6475052dd9201079e574e51d0bfe2ae72704a955e8f6ff555d391

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9917

Heuristics 5

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://nomylo.ru/uplcv?utm_term=export+doc+to+pdf+mac PDF link annotation
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160be982d20ca4---97950388435.pdfIn PDF document text
- http://findmealocalpainter.com/insurazon/admin/userfiles/file/borigevagis.pdfIn PDF document text
- https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/ab3047a7d5f3164cb76611b3b6838a6d/50795233186.pdfIn PDF document text
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160dd73f374033---33113738541.pdfIn PDF document text
- http://charivne.info/images/file/87710882122.pdfIn PDF document text
- http://unseretochter.ch/images/file/69706853157.pdfIn PDF document text
- http://aftckwt.com/uploads/file/23818615138.pdfIn PDF document text
- https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/69016bdb55488136bb82cb685d8b9fcd/difusabobijasix.pdfIn PDF document text
- https://membermimpi.com/contents/files/78305619488.pdfIn PDF document text
- http://vencedor.coop/images/admin/file/69024102.pdfIn PDF document text
- http://falconartistmanagement.com/ckfinder/userfiles/files/94534798577.pdfIn PDF document text
- http://foodchemsino.com/d/files/vejijufekedimuxazo.pdfIn PDF document text
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16084db1b710e5---zumubev.pdfIn PDF document text
- https://smilepaper.tw/archive/upload/files/nesuxi.pdfIn PDF document text
- http://www.jobsincrete.gr/images/_user_na/file/42918330096.pdfIn PDF document text
- http://xn--szabowski-tub.pl/userfiles/file/kokepot.pdfIn PDF document text
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/ls6g8a55j5l9pqq39tu2e0u2an/zulisuvonetenavumalewu.pdfIn PDF document text
- http://rotarylaspalmas.orgdocumentos/file/68769854259.pdfIn PDF document text
- http://divorcefinance.nl/uploads/file/sufinareregozo.pdfIn PDF document text
- https://theatresaucinema.fr/uploads/file/zuruzexupagotoruzo.pdfIn PDF document text
- https://ehotelgateway.com/bot/ckfinder/uf/files/mabipubesap.pdfIn PDF document text
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/3966d27bd54e66f06077197f9d35ba2a/10147600908.pdfIn PDF document text
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/57691b37efdf99273022f5f4d032e2a2/xidazarimelaxanusurate.pdfIn PDF document text
- http://tjsijiqing.com/ckfinder/userfiles/files/2021/0603/afcd48eafe2cc32d684d3cffa5372212.pdfIn PDF document text
- http://anhbanglaw.com/userfiles/file/wenin.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/d3e62b34ea5e258bff4a503d34f7d7d6/48907097195.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_off0000dc81.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC81	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f493.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF493	17260 bytes
SHA-256: `0faf4707f008cd3b11fa82b4766dc678db4d776f81fc9a05ee5ff658d2442fec`
`font_02_sfnt_off0001214c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1214C	10324 bytes
SHA-256: `ba493005d0aefabecb4ce9cfc16d7609afa987e6a2f34ccae7d7d42e9211423c`

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