PDF malware analysis — malicious · 80f206fe2697e978

MALICIOUS

PDF

89.3 KB Created: 2021-07-08 18:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: a5ad130b410c87b1083b9afad73f2536 SHA-1: 2dd26f841376ea5ac728b549fd65ff7bc8fefedf SHA-256: 80f206fe2697e978e27fde4c5bffe643e7d558f3175dfa43d316b3b577c6c5b8

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised CMS platforms. The primary purpose appears to be directing users to potentially malicious sites, likely for phishing or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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 https://archism.ru/uplcv?utm_term=how+to+wash+sweaters+in+washing+machine PDF link annotation
- http://unsersohn.ch/images/file/tesep.pdfIn PDF document text
- http://johnmichaelharrisonlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/87029873058.pdfIn PDF document text
- http://chingyi.tw/userfiles/files/tenarejeparol.pdfIn PDF document text
- http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/1925473082.pdfIn PDF document text
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608a626f231a8---getinikuponuzizenetulew.pdfIn PDF document text
- http://kamnitikamini.si/upload/files/48847703982.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e140dd52d06---78268802883.pdfIn PDF document text
- https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4f9091f188---pogojom.pdfIn PDF document text
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/ba6f9af4dd9e42b90db48bf1b586f43f/vuxekamazubokuvudewise.pdfIn PDF document text
- https://caribemed.com/userfiles/file/7148500183.pdfIn PDF document text
- https://roweryelectra.pl/app/webroot/uploads/file/16234372323341.pdfIn PDF document text
- http://autoscuolauniversale.it/userfiles/files/meluwojob.pdfIn PDF document text
- https://girl0229960192.com/upload/users/files/95328395204.pdfIn PDF document text
- https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a5e89f11cda---9715315258.pdfIn PDF document text
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094882170976---90393780954.pdfIn PDF document text
- https://chptravel.ir/data/file/xilotiduvozovemimirobafan.pdfIn PDF document text
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/e1771dc590e9e580537d854eae03ea4a/jukupemikilufokukimububa.pdfIn PDF document text
- http://peaceinsrilanka.lk/userfiles/file/22780819741.pdfIn PDF document text
- http://tantusmarina.com/UserFiles/file/69898939109.pdfIn PDF document text
- http://fitviewer.biz/files/file/wakedilit.pdfIn PDF document text
- https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/2ce8a98ddf8de17f24968fbc33273bdd/98188477527.pdfIn PDF document text
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/7063f4c2629bef2888be14c22b882e1c/losupatipojekepuxezozesaz.pdfIn PDF document text
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bd4022185e1---fuvapepu.pdfIn PDF document text
- http://giftboxvietthuy.com/upload/ck/files/21621926252.pdfIn PDF document text
- http://bajcsidavidfoto.com/_user/file/goxip.pdfIn PDF document text
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/96e6f26fa5238913b36f49bd4fdf4822/zifojuzigepuwajafubu.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_off0000f6a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6A1	10708 bytes
SHA-256: `17abad0bdca67bd52c2bec65729e780ac99c229ae094a880c4f14d9d16be32a0`
`font_01_sfnt_off00010f18.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F18	19008 bytes
SHA-256: `84d4ff191e7a8f27792d76719273fdcf111c9381ad2c20220e887b8973a1f0d7`
`font_02_sfnt_off00013f56.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F56	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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