PDF malware analysis — malicious · 9cecf01fee31557e

MALICIOUS

PDF

83.6 KB Created: 2021-10-09 00:55:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03

MD5: 99d9c0a95d53fe4e702a2235a218b93d SHA-1: 34cdbb5ad784c1c391178ce82537b6899346e788 SHA-256: 9cecf01fee31557ebbcf9792b6495227344acca13eeb842d4992abd310c0355f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution intent. It contains numerous external URLs, with one specifically identified as a link farm on disposable hosting, suggesting a redirection mechanism. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards an attack pattern involving the exploitation of PDF vulnerabilities or social engineering to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://inwebjor.ru/uplcv?utm_term=benjamin+on+the+mimetic+faculty+pdf PDF link annotation
- https://arhometutor.com/userfiles/file/48763123001.pdfIn PDF document text
- https://equimat-cheval.fr/file/31826255286.pdfIn PDF document text
- http://maychamsocda.vn/images/userfiles/file/vuletevafewepupajodilefox.pdfIn PDF document text
- http://internet-trade.cz/UserFiles/file/menazowebegobasikafubukuv.pdfIn PDF document text
- http://rkenterprisesonline.com/FCKeditor/file/73968633168.pdfIn PDF document text
- http://krasneclanky.cz/uploads/79987666033.pdfIn PDF document text
- http://forter.vn/hinhanh/file/vifobujamifidizisofawo.pdfIn PDF document text
- http://hairandoil.com/uploads/2585360141.pdfIn PDF document text
- http://yesilderecine.com/admin/editor_resim/file/kefaje.pdfIn PDF document text
- http://geo-equipe.it/userfiles/files/zarolopaloveriwebeli.pdfIn PDF document text
- https://alpinashop.bg/files/zifasoranonijirubego.pdfIn PDF document text
- http://patriabrno.cz/userfiles/files/45111010403.pdfIn PDF document text
- https://ratsimae.ee/media/contents/file/44423373743.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/161351966e05c6---bexewav.pdfIn PDF document text
- http://afghansolar.com/userfiles/file/pakutowujefafone.pdfIn PDF document text
- http://bannermaul.com/userData/board/file/gevekat.pdfIn PDF document text
- https://binarbaidequipment.com/public_html/userfiles/file/suzejuzowojaxexesilijepif.pdfIn PDF document text
- https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161515d75e90a3---tokujod.pdfIn PDF document text
- http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/28985804815.pdfIn PDF document text
- http://baldonimarcostudio.eu/userfiles/files/53133489999.pdfIn PDF document text
- https://tramhuonghanoi.vn/upload/files/14372938959.pdfIn PDF document text
- http://vecsecity.info/editor_up/zixidetupikude.pdfIn PDF document text
- http://lactopad.com/uploads/files/titejikawerolajusisoxomip.pdfIn PDF document text
- https://kisikana.hr/UserFiles/files/50526599422.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_off0000e22c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE22C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000fa43.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA43	11012 bytes
SHA-256: `9ef38a77bed81c9496ef1da2b097a5442735bf81a1c25f19af60acb4fb699739`
`font_02_sfnt_off000113a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x113A5	17952 bytes
SHA-256: `f20bcfd341ac1e32861bd40f782c4ad7c2d4c5756afee1d2763621c975db7a6b`

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