PDF malware analysis — malicious · 6f47777c37e0be87

MALICIOUS

PDF

249.5 KB Created: 2021-07-23 12:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: c80eabc70b4038b96e62e919b0a6b9b9 SHA-1: 97d5da79008a65ef311771c019d18cab059fab08 SHA-256: 6f47777c37e0be8774c349f6894794af4e7cb4bf79b7fd6a768c7fd306a16206

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious payloads. Several heuristics indicate the PDF links to compromised WordPress sites, specifically using form upload plugins, and one URL points directly to a raw IP address. The embedded JavaScript likely facilitates the download and execution of a second-stage payload from these compromised locations.

Machine Learning

Nyx PDF Classifier malicious score 0.8291

Heuristics 7

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL

PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c7506d5811---99364513244.pdf PDF link annotation
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/3cf403f2280e4be8eabce4f10fba0e94/padot.pdfIn PDF document text
- https://angkortaxiservice.com/userfiles/file/74982592681.pdfIn PDF document text
- https://houstoncoinshow.org/FCKeditor/file/fetamezuvesumigitidobufiv.pdfIn PDF document text
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/dc75f70d5eb1af0e90bd3f38a97b3538/refatefunuxoxitemupu.pdfIn PDF document text
- https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/d5abe3893d9d19b93f7033548ae2d26a/gakuxidonumilovuki.pdfIn PDF document text
- https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/3671edb70b65d397915acce4a4e513e0/72452680855.pdfIn PDF document text
- http://askort.pl/Upload/file/wumexotozolativuxovog.pdfIn PDF document text
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942560156d8---mosofatigewizopewepotudu.pdfIn PDF document text
- http://diversecityuk.com/userfiles/file/kijagaziwip.pdfIn PDF document text
- http://lovec.bg/root/ckfinder/userfiles/files/77084028033.pdfIn PDF document text
- https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/314429d28d79ff7b0600aec1ca4e1ee3/33105991842.pdfIn PDF document text
- http://abogarestudio.com/userfiles/file/rebejited.pdfIn PDF document text
- https://macroedunet.com/userfiles/file/27360072036.pdfIn PDF document text
- http://kennedy-jackson.com/clients/f/f7/f78508644b517540cdb1549d93860f53/File/77174811254.pdfIn PDF document text
- http://rund.cz/UserFiles/File/lowigurajatiluxotada.pdfIn PDF document text
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/qrp15epvg6bbobvm06p40clq58/tezaxutupusodep.pdfIn PDF document text
- https://bandai-k.com/userfiles/file/dotadenupedobuwumiruge.pdfIn PDF document text
- https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/8a75cbc2765d62748d56fd5cd390d96e/24818976123.pdfIn PDF document text
- https://thietbidienmanhcuong.com/upload/files/46639948722.pdfIn PDF document text
- http://hungbuloon.com/media/ftp/file/davezibep.pdfIn PDF document text
- https://asthasupermarket.com/userfiles/file/kuxedozepebekedekobobo.pdfIn PDF document text
- http://parfumerieindex.nl/images/uploads/raxuwud.pdfIn PDF document text
- https://lawtutors.co.uk/js/ckfinder/userfiles/files/pujosibukodulibot.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=5+monarchy+countriesPDF 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_off00037218.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x37218	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00038a2a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x38A2A	20816 bytes
SHA-256: `0bd271d520926b17f93ef9b3e74886bff55e727c84e310f16fdd03ab0fc4f0c4`
`font_02_sfnt_off0003bfc2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3BFC2	10700 bytes
SHA-256: `4486d6d48af6db713d7c98d391e77e5aa5854fca6c55123f16449b611175e8f3`

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