Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2be6b24c64310ad…

MALICIOUS

PDF

77.5 KB Created: 2021-09-17 21:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: e5c6c94c99d5062c8892cb3c71e45ff7 SHA-1: 9034eea5aac5649ca55208f76433e065e04c59d4 SHA-256: c2be6b24c64310ad68e52450d262cb42e2205434d6f654a8f514348fd2e9ab80
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including one pointing to a raw IP address, indicating an attempt to redirect the user to a malicious site. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is part of a link farm designed to obscure malicious intent. The ML classifier and ClamAV detection strongly indicate malicious behavior, likely a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://smwebtechnology.com/arishayurveda.com/userfiles/file/vexoliwotokaba.pdf In PDF document text
    • http://irinaburmistrova.ru/files/fudivesume.pdfIn PDF document text
    • http://phuongdonggolf.vn/app/webroot/uploads/files/xapipitinazedujanuvagagil.pdfIn PDF document text
    • https://aarhuskortet.dk/images/file/palidotovu.pdfIn PDF document text
    • https://stollerco.com/testingsites/advantage_aviation/assets/media/file/fujosolizijonufoxijupibip.pdfIn PDF document text
    • http://agriturismocorteerbatici.it/userfiles/files/lidazabifoguvugugofusa.pdfIn PDF document text
    • https://intervalhousehamilton.org/ckfinder/userfiles/files/82448738566.pdfIn PDF document text
    • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/fikedabedidotonuzezerit.pdfIn PDF document text
    • http://www.ambatownship.com/ckfinder/userfiles/files/mizabibe.pdfIn PDF document text
    • http://harc-ias.vn/Images_upload/files/dumibezogidibimonuke.pdfIn PDF document text
    • https://weilmclainboiler.ca/fck_upload/file/17202026892.pdfIn PDF document text
    • https://aptitudeclass.com/ckfinder/userfiles/files/rimugozigazitaduvivopej.pdfIn PDF document text
    • http://ltpbetel.ro/userfiles/file/81014039096.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20210910233554.pdfIn PDF document text
    • https://www.frontiermyanmar.com/sites/all/libraries/ckfinder/userfiles/files/18182064918.pdfIn PDF document text
    • http://www.ks-klinika.ru/ckfinder/userfiles/files/15834621115.pdfIn PDF document text
    • http://firewaterdamagedfw.com/test/fckeditor/uploadfiles/file/kewiruvexafozavezavud.pdfIn PDF document text
    • http://sooclose.eu/upload/File/zanawifabimifewixo.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16136509247132---70753284087.pdfPDF link annotation
    • https://tiklatakip.com/calisma2/files/uploads/rutof.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/xisodubebipezunomede.pdfIn PDF document text
    • https://abctranslink.com/ckfinder/userfiles/files/13918468752.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613da4edbf983---gamikefewimew.pdfIn PDF document text
    • http://mtcongnghiepxanh.com/upload/fckimagesfile/wufikufakipapotutisuwom.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/7385542106.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=job+resume+send+mail+formatPDF 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_off0000cea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA3 16120 bytes
SHA-256: b1e910034bb4d6d770a0472a65dfab40d3f0c5880b6c8deb4ed505b00cbd545d
font_01_sfnt_off0000f7f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001100e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1100E 10744 bytes
SHA-256: d34f4b7270e7a7c7706d3d783b1ee0d58df71191af67084bcebaea15f00fd793

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