PDF malware analysis — malicious · 195e084deeb20272

MALICIOUS

PDF

93.9 KB Created: 2021-08-08 14:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: aa5f74c7a4e9eb13dcca0e7fcdeab047 SHA-1: cfd024cb50dd85bd0cbd847fdbfde48efdff61b2 SHA-256: 195e084deeb20272325284e3fa0d922178a2287f94d5233d2359ebbeceaaca4b

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9938

Heuristics 6

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.
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://gulfsupremesa.com/ckfinder/userfiles/files/vusiniwilez.pdf In PDF document text
- https://haps.company/wp-content/plugins/super-forms/uploads/php/files/0c5db14b383060c3bd7583bd47be10fc/kevagowexogelefoza.pdfIn PDF document text
- https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/e0c0bb40bd0d4fd0d29999eb1c0ceb78/jabaxozuxolufuwu.pdfIn PDF document text
- https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16096519d27233---lupigatulijiparuvunikinop.pdfIn PDF document text
- http://cokhixnktientien.com/Images_upload/files/faxukiremokoxarine.pdfIn PDF document text
- http://prestizhstroycompany.ru/SITE/files/editor/file/vununoxer.pdfIn PDF document text
- https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/12kqkvf2g13uofkfn0av51gv4r/94477710232.pdfIn PDF document text
- https://citronixdeflection.com/nbloom/fckuploads/file/nanisirulomokonofuriwugo.pdfIn PDF document text
- http://baraanduliaptti.org/userfiles/file/35534136381.pdfIn PDF document text
- https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/903a59381cfa79f8b1902a4d07a54116/xazokix.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160be360937817---64356195920.pdfIn PDF document text
- https://cavalier-hundezucht.ch/userfiles/file/zetuxezodunefemujemezedel.pdfIn PDF document text
- http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/cab39e22eaeead7dfdea3e56d48e5e37/gerulivufijudafagajow.pdfIn PDF document text
- http://ilovechardonnayhills.com/userimages/93615411435.pdfIn PDF document text
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/9513dcda37e362e0b17dc0c5f6b805fa/wujuzaxubomuwumuvegepolib.pdfIn PDF document text
- http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/2h33hq16ehgiqqe1k3k8t8f4m5/xugeboworimekilif.pdfIn PDF document text
- http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607759fe0c105---25858593737.pdfIn PDF document text
- http://tingyi-bnb.com/CKEdit/upload/files/9183068092.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609544342e885---787355856.pdfIn PDF document text
- http://palenice.net/obrazky_clanky/file/mewaj.pdfIn PDF document text
- http://carefirstyoungatheartgala.com/clients/b/bc/bc61c41cf33a111e4089ebab1e34a2ce/File/74980531304.pdfIn PDF document text
- http://studiotravenzolo.it/userfiles/files/6654647872.pdfIn PDF document text
- http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/mebagojivuwujipugola.pdfIn PDF document text
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/f86166b8a2ff4b265e033ddcfcb04f70/bafudemazoxawugazefisoz.pdfIn PDF document text
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8f763c4bb5---tenaruxaga.pdfIn PDF document text
- http://karate-talence.com/newsite/userfiles/files/47123328027.pdfIn PDF document text
- http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160b6643e6a477---27362393850.pdfIn PDF document text
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/6caiu7hudc4vc14b08pvnldteh/83437408670.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=auggie+and+me+audiobook+full+bookPDF 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_off0001063f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1063F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00011e56.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11E56	10644 bytes
SHA-256: `3c95c6c7c07065a620f1e5ea361164581d41d74c9a6d9de0c65edcb95864d06b`
`font_02_sfnt_off0001366d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1366D	18680 bytes
SHA-256: `6269d1fe6d0711b760cb443d8e9b5b7c5266b01b7a9fe0a071f647e570668eea`

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