PDF malware analysis — malicious · eb03c5c667758623

MALICIOUS

PDF

89.7 KB Created: 2021-07-22 07:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 236c059d2a816492964b19f1cfe0172c SHA-1: 1a2c5da9ca7fca039d440960dede5c0a53107fda SHA-256: eb03c5c667758623d4a2f199bfd0fd86f2145bb80aaf1cf339a91888f0f1f818

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, many of which point to compromised CMS uploads or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, classifying it as a phishing trojan.

Machine Learning

Nyx PDF Classifier malicious score 0.9954

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://dedanskecasinoer.dk/userfiles/file/36533148186.pdf In PDF document text
- https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/6c2adcdd61530f7284a7a94c73896478/83177025993.pdfIn PDF document text
- http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16076656399a1a---visaper.pdfIn PDF document text
- https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/d7fbe153159a2e3bc20bd791c0771621/64253630497.pdfIn PDF document text
- http://kimbuunguyen.com/uploads/userfiles/file/77746939167.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a02fa7d6e1---xoratokonorizejel.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/cab00cb2a68a2ef2761b234702279671/76469772085.pdfIn PDF document text
- https://mdteam.se/ckfinder/userfiles/files/8515888638.pdfIn PDF document text
- https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160be068a9fc10---pidizezetisudi.pdfIn PDF document text
- https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/qpljuu4ia0kjgo6pl04kdppg29/82622085661.pdfIn PDF document text
- https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d53073a33c---wivafuguloki.pdfIn PDF document text
- http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084cb2849cd2---5346377711.pdfIn PDF document text
- http://matthewsmillsreunion.com/clients/c/c7/c7863f7b93cb17915b2a89d887155530/File/girabarubupunenirala.pdfIn PDF document text
- http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160a170e6385f5---24033866959.pdfIn PDF document text
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e20fe4fedb---bakawamafulekefazuka.pdfIn PDF document text
- https://aneri12.eu/res/file/87522697636.pdfIn PDF document text
- https://biogenetixpharma.com/ci/userfiles/files/97381146097.pdfIn PDF document text
- http://phrabat.net/UserFiles/File/42383471778.pdfIn PDF document text
- http://modellszerviz.hu/userfiles/file/xasugaluwuvajutiket.pdfIn PDF document text
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/c84300c9fe5592a6dbb748b2c91d85e3/38350316267.pdfIn PDF document text
- https://igruppe.no/ckfinder/userfiles//files/topev.pdfIn PDF document text
- http://szyldkj.com/luodan/images/userfiles/file/jukataminofelakiwawini.pdfIn PDF document text
- https://chinese-wall.tw/upload/files/29683334956.pdfIn PDF document text
- http://grandp.ru/userfiles/file/totisuzadifax.pdfIn PDF document text
- http://finproekt-msk.ru/userfiles/file/8820732631.pdfIn PDF document text
- http://joewhitefamilysite.com/clients/59967/File/12030704777.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=ms+dhoni+full+movie+download+480p+filmywapPDF 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_off0000f975.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF975	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0001118c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1118C	11332 bytes
SHA-256: `8b2154a41ebb7e3ab5870c4269c614debd231eedb0a8c6ac88d0cbc5cc66d1f7`
`font_02_sfnt_off00012c12.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12C12	16884 bytes
SHA-256: `1f4399c2a5ed77b36ce903c7cf3430fd92052608f5ced23acc7384ffdef67fff`

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