Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6e97bd05c6bfec…

MALICIOUS

PDF

74.8 KB Created: 2021-10-06 09:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: e62dc0c88de0ba71978e50d4bb10129c SHA-1: feb323f7e720f969e134b6217f09a1845a5f1f8b SHA-256: ee6e97bd05c6bfec7651fe0b15b551483eadbdac3f03d68bf78cd6600010254e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, with one heuristic specifically identifying it as a link farm on disposable hosting, suggesting a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and the presence of external links strongly suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://at1apigroup3.com/contents/files/fesenegoxozofabu.pdf In PDF document text
    • http://residenceraffaellotorino.com/userfiles/files/gazimigikobuduv.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20210907_7D1399328E0E0BD6.pdfIn PDF document text
    • https://mallarpurnaisuva.org/go/file/10064303397.pdfIn PDF document text
    • http://colafranceschi.it/userfiles/files/kifalebupeg.pdfIn PDF document text
    • http://wixoon.hu/upload/file/67268730392.pdfIn PDF document text
    • https://yapluka-services.fr/userfiles/file/38092188830.pdfIn PDF document text
    • http://tiquital.com/documentos/file/49035570736.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/af7956bc9bc860875ae8591cacdebd88/70584880083.pdfIn PDF document text
    • http://studiolegaletrotta.eu/userfiles/files/nilapenojagosegote.pdfIn PDF document text
    • http://bellamy.tw/uploads/files/202109150857395642.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/50301049606.pdfIn PDF document text
    • http://xn--80aadcnaeutgftohcogh8i8dsc.xn--p1ai/pict/file/gudidubupawiti.pdfIn PDF document text
    • http://csc0731.com/userfiles/file/20210906160216_e8p0at.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20210921000619.pdfIn PDF document text
    • http://uniondrygoods.com/fckeditor/userfiles/file/82281273795.pdfIn PDF document text
    • http://cuakeobinhduong.com/upload/files/movovupupezuviz.pdfIn PDF document text
    • https://bliznacite.com/files/kilisodibifimolovimogolop.pdfIn PDF document text
    • http://tsg-vaganovskoe.ru/ckfinder/userfiles/files/bewaxemutemujixufajekis.pdfIn PDF document text
    • http://rts-3.ru/upload/files/pepamewenuverorab.pdfIn PDF document text
    • https://elesud.it/img_pagine/file/vaxoxame.pdfIn PDF document text
    • http://xz-brand.com/ckfinder/userfiles/files/6565272667.pdfIn PDF document text
    • http://teplo76.ru/uploads/file/bojujonijurumax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=t855+thermostat+troubleshootingPDF 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.

FilenameKindSourceSize
font_00_sfnt_off0000bd76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD76 17904 bytes
SHA-256: 345352055f1c75bd9c0ebb6b00bb59123e837cce9b84c097cc9513f457592253
font_01_sfnt_off0000ec21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC21 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10438 11100 bytes
SHA-256: 6239b3fe6d1f368273f0dba35677bb485eb0455bd28bb61517e890eb19b09c7b

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