PDF malware analysis — malicious · b49eb32f4b44b310

MALICIOUS

PDF

94.2 KB Created: 2021-06-28 01:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: a5e602ffd29f99da2854bc44913e31fc SHA-1: 364e8288e59a869f1deccdc429aed1bf99eee42f SHA-256: b49eb32f4b44b310b49e9216b82e324057ce120d5c7282704822cc4e97ec89ca

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by an ML classifier as malicious. It contains a large number of external URIs and link farms pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content or phishing sites. The primary attack pattern involves leveraging these links to potentially download further payloads or lead users to malicious websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9866

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://pistant.ru/uplcv?utm_term=ksi+and+tommyinnit PDF link annotation
- http://ankaser.com/userfiles/file/tajakuzusawazixamido.pdfIn PDF document text
- https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609cafc4e9edd---1323161499.pdfIn PDF document text
- https://artofsurfing.com/preview/ckfinder/userfiles/files/zedelidupaxaminutu.pdfIn PDF document text
- https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/pvhrfu4v9sbu1pvb6j13bl2nbb/bakopuvalenoxul.pdfIn PDF document text
- https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/fnte951nkglsc99vgiu06pn81h/62667635874.pdfIn PDF document text
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/a452a765c280e3df32db659116f1ee49/wavuvusebiva.pdfIn PDF document text
- http://titusrelay.com/clients/e/ef/ef304ccc03541e9e6382bef5f13b0a7d/File/webexutufisiju.pdfIn PDF document text
- http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0a0867031b---98069105032.pdfIn PDF document text
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d468df0362---3158021727.pdfIn PDF document text
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/ipn3coabbhdnvqcbb68rq8psd2/28824015966.pdfIn PDF document text
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb8e4d37e58---75553025516.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0db44974be---rudobutupemeb.pdfIn PDF document text
- https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b3acb99deeb---mejet.pdfIn PDF document text
- http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c773ab2ef---37603214719.pdfIn PDF document text
- http://hzdsbg.com/uploadfile/1620813101.pdfIn PDF document text
- http://currycornersugarland.com/admin/images/file/palekabujuzowegumagazuxa.pdfIn PDF document text
- https://foodvellythailand.com/upload/files/komuvinaxu.pdfIn PDF document text
- https://bmw-zona.ru/uploads/file/87264472951.pdfIn PDF document text
- http://galettedesrois.hu/userfiles/file/maguvaxez.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609caeff3fd70---79195093108.pdfIn PDF document text
- http://beloezoloto.ru/userfiles/file/87969630891.pdfIn PDF document text
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/eqfapf075j20em4jr3gqjdqq6k/nazogewobud.pdfIn PDF document text
- http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d463ff735ec---72620407224.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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ec35.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC35	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010447.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10447	18432 bytes
SHA-256: `ec0820a357606e501d79edaf85493d30b8052fbdf10401eb98b125f9f95138e0`
`font_02_sfnt_off00013558.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13558	16440 bytes
SHA-256: `1bab5a3a830dd6df191ff1ea5b04f49868910e8e1f0ea21925ec14d087cdfb54`
`font_03_sfnt_off00014be6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14BE6	10236 bytes
SHA-256: `97c46ab267626bf26a808a38936e281a56df7d23f68e52db66b725ce9bfcd4b2`
`font_04_sfnt_off000162d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x162D4	1728 bytes
SHA-256: `0c0d45d8e6c9ae93fcf64990cf77236d154d7cf46fb338875e96c0e6013efb5a`

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