Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed629c893838e56…

MALICIOUS

PDF

82.4 KB Created: 2021-09-08 19:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 5536e4ee37da24094446c79789a2199b SHA-1: 1bda3b2ccfcfcd2ec6086d159e439c5e1c0b2557 SHA-256: 0ed629c893838e565ee3327cdd6309d25e9c8d711a8a5bc06920c9194ec943dd
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains multiple embedded URIs, one of which points to a raw IP address, indicating a likely attempt to redirect the user to a malicious site. The PDF structure and embedded links suggest it's part of a phishing campaign or malware distribution effort.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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.
  • 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://pereplanirovkaoblast.ru/pict/file/8955725205.pdf In PDF document text
    • http://tuzvedo.hu/elemek/file/vusemimawopakoxowoperot.pdfIn PDF document text
    • http://studiopedrazzini.eu/userfiles/files/57689670037.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/vuwovimebifepilibomafafip.pdfIn PDF document text
    • http://cableesmaltado.com/d/files/58562290201.pdfIn PDF document text
    • http://gospelpour100voix.com/fichiers/newsletter/file/nugewefixosaraduno.pdfIn PDF document text
    • http://occahomesearch.com/userfiles/files/jefoxosumevonid.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/jigiratab.pdfIn PDF document text
    • https://aiwcecckolkata.org/FCKeditor/file/mowexize.pdfIn PDF document text
    • http://www.sintsprev-ms.org.br/ckfinder/userfiles/files/69966239566.pdfIn PDF document text
    • http://bobas24.pl/Upload/file/20102303478.pdfIn PDF document text
    • http://hungthanhauto.com/luutru/files/vomajosuxuf.pdfIn PDF document text
    • http://honghuibio.com/d/files/72572051726.pdfIn PDF document text
    • http://www.siposferenc.hu/html/bubetiredifazetosadaginef.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/mamugosekowevijazigepow.pdfPDF link annotation
    • http://flairpens.ru/uploads/file/kovokebaviwenedu.pdfIn PDF document text
    • https://www.gpaci.org.br/cms/ckfinder/userfiles/files/jujek.pdfIn PDF document text
    • https://www.stock2morrow.com/ckfinder/userfiles/files/546207649.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/161349b2b22f99---58889741486.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/nujuwus.pdfIn PDF document text
    • http://www.saaegfpolis.org.br/ckfinder/userfiles/files/36582151482.pdfIn PDF document text
    • https://thietkewebseo.com/webroot/img/files/vavatasor.pdfIn PDF document text
    • http://vesimport.ru/userfiles/file/43731582770.pdfIn PDF document text
    • http://gurolmumcu.com/userfiles/file/86024089837.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/33494348437.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=gloomy+sunday+pdf+chordsPDF 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_off0000d68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68E 20040 bytes
SHA-256: edd440412464d264bb6e54924c4da9a247d175f9700b1390aa798ba48e092826
font_01_sfnt_off00010ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000123b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123B8 10816 bytes
SHA-256: 83175b655ceb0c5ee9924e845f471df76b0308bd569d2b7e734617e64a926d0f