PDF malware analysis — malicious · d4f42e27129cfb07

MALICIOUS

PDF

77.1 KB Created: 2021-09-15 15:37:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: c8d8b89c23b98449f6b7ed7988245e63 SHA-1: 49c08f9d870609d5cc3eabe4c4662b71e9d4792d SHA-256: d4f42e27129cfb07cb389bba622b2b69446830118722ba851e4d6de4cafc31f1

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting it's used to redirect users to potentially harmful sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_URI heuristics strongly supports a phishing or malware distribution attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9948

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
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://pixomot.ru/uplcv?utm_term=apk+mod+menu+para+roblox+actualizado PDF link annotation
- http://biomedia.asia/upload/ckimage/files/11271966789.pdfIn PDF document text
- http://joy05.com/_UploadFile/Images/file/resuda.pdfIn PDF document text
- http://kunas.lt/app/webroot/uploads/files/79024999569.pdfIn PDF document text
- https://advance-pack.com/editor_upload/file/zuzuneb.pdfIn PDF document text
- https://muahohangnhat.com/app/webroot/uploads/files/nabizotojovakapagifesovi.pdfIn PDF document text
- https://safewatersolutions.in/ckfinder/userfiles/files/domefufojukat.pdfIn PDF document text
- https://cmottaviproductive.it/uploads/file/90246082811.pdfIn PDF document text
- https://giant-nano.com/app/webroot/userfiles/files/45952609806.pdfIn PDF document text
- https://locktactyuma.com/userfiles/file/68782094207.pdfIn PDF document text
- http://aliceinformaticasrl.com/user/pages/87175325232.pdfIn PDF document text
- http://thecuriosityshot.com/pizurewixetavuposuj.pdfIn PDF document text
- http://355353.ru/userfiles/file/getufonuzemilakisa.pdfIn PDF document text
- https://fertilizergranulatorprice.com/d/files/kilibu.pdfIn PDF document text
- https://www.ojchamber.com/ckfinder/userfiles/files/kokasomivoxoruvop.pdfIn PDF document text
- http://jinsonmetal.com/Upload/file/29061355511.pdfIn PDF document text
- https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/7986776cfedf76ee2ff0853705f5dffd/53850849816.pdfIn PDF document text
- https://pasarantogel.com/contents/files/90497264824.pdfIn PDF document text
- http://insuralead.com/userfiles/file/kipikike.pdfIn PDF document text
- http://kamakuralosgatos.com/uploads/files/11174809387.pdfIn PDF document text
- http://basar-hemeringen.de/ablage/userfiles/files/bafin.pdfIn PDF document text
- http://esllearningbydesign.com/app/webroot/files/file/12261372458.pdfIn PDF document text
- http://ingmarcofaedi.com/userfiles/files/raviwapevisevimefew.pdfIn PDF document text
- http://adams-gold.ru/archive/image/file/wetadupolivojuli.pdfIn PDF document text
- https://everestart.com/images/stories/file/49808125736.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_off0000c52e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC52E	10984 bytes
SHA-256: `d3e61d73aa3d404e2c8389c7ba3af782cfebfc41e2f0cafee79d6ed287bc35e0`
`font_01_sfnt_off0000de70.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE70	18504 bytes
SHA-256: `5b5d5fbac3bef27869c44f35fc6c697f83d01aaee7c7bb1af43d12a5227e5e94`
`font_02_sfnt_off00010eba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10EBA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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