Malicious PDF — malware analysis report

Static analysis result for SHA-256 332924df5d50450b…

MALICIOUS

PDF

77.3 KB Created: 2021-09-06 00:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: a9dfa4f1a8fbc630b4c89b7b961b9771 SHA-1: 3bc6680eb58d936ff63432a6b56571d0206f442e SHA-256: 332924df5d50450b0f940bfddcb82f986bcf6ce8488aa4342526c383065b31b1
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lsbwg.com/ckfinder/userfiles/files/20210831/1151106989.pdf In PDF document text
    • https://digireg.it/upload/sodoxezenem.pdfIn PDF document text
    • http://apisicul.com/userfiles/files/vorudakuta.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/a2sbtb4bkbs7mnjv7u64b7kmvu/69378515946.pdfIn PDF document text
    • http://2018.letnifestiwal.pl/ckfinder/userfiles/files/zixesazadofibudug.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c2aab60d83---15307157119.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/2ae6ea4123fc59d7b309d0d4fed067c1/16852612691.pdfIn PDF document text
    • http://abwingsva.com/uploads/files/85894926501.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609753ec9b8f5---molexulezimej.pdfIn PDF document text
    • http://totaldeliverancecathedralchurch.com/clients/2/22/22dae496a1749ae881e6bee195142b05/File/43226865584.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/nesezanuduwibidulevoxir.pdfIn PDF document text
    • https://www.ventisilva.com.br/ckfinder/userfiles/files/63965986667.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/2mu9d8eklkevvdt5ivo71v1kd0/kanezi.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160884803be5e9---jaliwejejewepuzakujiv.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/ad3754ca825862a96cc85610609c49b0/71325625502.pdfIn PDF document text
    • http://dongtienlamnghiep.com/upload/file/5694184077.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/bb2c1cc3103b11b7654cbbfdbc8fa720/noxobinetowigipijo.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b12d98e2f0---ludebojuwaveg.pdfIn PDF document text
    • http://pet.nfe.go.th/m_site/ckfinder/userfiles//files/manetiruvedagakiminori.pdfIn PDF document text
    • http://klhl.com/userfiles/file/fubobudepomugoremowewa.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/poeud86iu1lejscf18vp9dho47/53334272827.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/990b58ea6111d633983dfb737b933747/narebobavalagiwomogebuw.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/3ddfcd14667285cc337c5b0874d9cca2/65640550817.pdfIn PDF document text
    • http://hotel-ambassador-nice.com/upload/files/bepesunigobaxuwus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=kiran+elementary+and+advanced+maths+pdfPDF 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_off0000c6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000deee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEE 10936 bytes
SHA-256: 76f7b5d9308dca3703df178bf2008b1a382df182513abc9196f19d63eafe06aa
font_02_sfnt_off0000f816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF816 18460 bytes
SHA-256: 3c048fd5f47068d0479d3660128da0fdeab9af42f95519a6b45c03dc67613341

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