PDF malware analysis — malicious · f846d3e814b19b36

MALICIOUS

PDF

80.3 KB Created: 2021-09-11 23:37:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 0aa0b9d19d9e840f8a50618c26e54b3f SHA-1: 4501c583e3194ee78510bae27fe6f4fa5af3f809 SHA-256: f846d3e814b19b369de317025ba26d7d174bb03f9f5bb90b8464c9f4ab36e461

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. The PDF contains numerous embedded URLs pointing to various domains, suggesting an attempt to redirect users to potentially malicious content or phishing sites. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to leverage external resources.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

Heuristics 5

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.
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://sgyscom.com/upload_fck/file/2021-9-11/20210911095708414120.pdf In PDF document text
- https://coebmsf.com/userfiles/file/43781335083.pdfIn PDF document text
- http://reliancefla.com/admin/images/file/12358291039.pdfIn PDF document text
- https://emotionalgift.youngzonejewelry.com/ckfinder/userfiles/files/56113220149.pdfIn PDF document text
- https://nasikampung.info/contents/files/gipowejonubisimoniparor.pdfIn PDF document text
- http://sten.kr/club/data/userfiles/file/20210910100543.pdfIn PDF document text
- https://dolphinsolutions.net/ckfinder/userfiles/files/4369821753.pdfIn PDF document text
- http://air-ned.com/uploads/files/lanojuwagusepa.pdfIn PDF document text
- http://mathrainbow.com/userfiles/file/42859260470.pdfIn PDF document text
- http://topoint.cc/userfiles/fckFile/20210912000736.pdfIn PDF document text
- https://0900107678.com/upload/file/vejapaxovotibipolofa.pdfIn PDF document text
- https://satuldelut.ro/ckfinder/userfiles/files/pexananegub.pdfIn PDF document text
- http://www.greenfield-sustainability.com/images/files/bedudejujisoxeterorabo.pdfIn PDF document text
- https://kaktutzhit.by/uploads/files/16855614376.pdfIn PDF document text
- http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138555b231bd---61887118925.pdfIn PDF document text
- https://alsharqcc.com/userfiles/files/tafigobozonatuxo.pdfIn PDF document text
- http://rasmesafar.net/basefile/basefiles/40219510640.pdfIn PDF document text
- http://thuaphatlailongthanh.vn/upload/contentFile/minhchau/file/keguvefaxiti.pdfIn PDF document text
- http://tsradviseurs.nl/mailing/images/photo/file/58037871675.pdfIn PDF document text
- http://ueros.fr/admin/ckfinder/userfiles/files/xorawarulixosul.pdfIn PDF document text
- http://www.mediagrand.hu/data/editorfile/tuvibelesadozunavamininaw.pdfIn PDF document text
- http://thelifelesson.net/home/tappingchanges/public_html/dowalumniusa/ckfinder/userfiles/files/nuwarelovuvidu.pdfIn PDF document text
- https://www.rapn.ru/ckfinder/userfiles/files/22490381097.pdfIn PDF document text
- https://okinawa4d.com/contents/files/14730034112.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=top+10+population+in+the+worldPDF 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_off0000d689.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD689	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000eea0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEA0	10644 bytes
SHA-256: `78d49945bc78ec5e7b118851ed02058e002e69830062fda7eb7b28feb54a6666`
`font_02_sfnt_off000106f9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x106F9	17452 bytes
SHA-256: `7f4a54404ca3d4e0487151e09c63a6eb5b6666b0b2f2cf8e704368d86bb05418`

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