PDF malware analysis — malicious · d79427a03bd1f48b

MALICIOUS

PDF

83.8 KB Created: 2021-09-02 02:48:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04

MD5: 6f86e90b9260f531c7aae2a50b04d953 SHA-1: 465f745bfc403298c8d0a3a1c8bbe0a623ddd373 SHA-256: d79427a03bd1f48bb3bea168f18bbbd48a22951e1544c04d14b3101f82160c24

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9925

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
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.
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 https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/f000566377e38655008c064e693b9d3a/fisupisujabikeneboko.pdf In PDF document text
- http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b866931273---pisupexuze.pdfIn PDF document text
- https://air-separation-supplier.com/d/files/36098897147.pdfIn PDF document text
- https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/7ada9aed3293617f407b816306ce65e1/gaduzidasinu.pdfIn PDF document text
- http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d322a9610a---lulikovexufunamaxudurare.pdfIn PDF document text
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bf90e2dacd6---6671925945.pdfIn PDF document text
- https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/0ff579e2318e6a421d724b4e7724dfcf/fepofasavaxebovupujuvak.pdfIn PDF document text
- http://apcmagon.com/userfiles/kegoxe.pdfIn PDF document text
- https://imahima.xyz/js/ckfinder/userfiles/files/ropinox.pdfIn PDF document text
- https://crmsaas.dswip.com/ci/userfiles/files/35272952478.pdfIn PDF document text
- http://fishtech.org/uploads/userfiles/file/file/bexomurukuxuwenefakop.pdfIn PDF document text
- https://vivaldiroberto.com/img/files/mediafiles/file/tarufutew.pdfIn PDF document text
- http://imaginove.eu/data/Files/siwefotosakaseweluwixi.pdfIn PDF document text
- http://binhchuachay.info/Images_upload/files/79076167065.pdfIn PDF document text
- http://aftckwt.com/uploads/file/bevafosurutuzo.pdfIn PDF document text
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c76d947fe14---61356937316.pdfIn PDF document text
- http://baocaosuhoatoc.com/luutru/files/89388383486.pdfIn PDF document text
- http://tokstar.com/_UploadFile/Images/file/vodetulamodinosakas.pdfIn PDF document text
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb0b157ea4---direvezakifabosuj.pdfIn PDF document text
- http://guchenes.com/d/files/xadakikezijijorur.pdfIn PDF document text
- http://spadhotel.com/basefile/spadhotelcom/files/sibawilapa.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1611cbf5d621a3---xotopomakagewizozije.pdfIn PDF document text
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/tepizifudubifekagawebe.pdfIn PDF document text
- http://techscreening.com/userfiles/files/18976974901.pdfIn PDF document text
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607403ca5478d---66821121849.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=maleficent+mistress+of+the+evilPDF link annotation
- https://www.rt9.rspo.org/ckfinder/userfiles/files/jovoratabuvujamew.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_off0000e485.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE485	16772 bytes
SHA-256: `f497708d5da264e30c35769b1919e60db2252b77d9ab8351a8d0eb9ea835e634`
`font_01_sfnt_off0001101b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1101B	10660 bytes
SHA-256: `b67217f36af328ee5e62f19ac639f0b11005bdb1d2a5d7f05ba7aca1be2a32da`
`font_02_sfnt_off0001285a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1285A	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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