Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccc1d55aaec8f0d…

MALICIOUS

PDF

95.5 KB Created: 2021-09-07 18:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d0c1bb849e7e372dbe232b2e025a5ab1 SHA-1: 54f24c9f1fc6c96357de180b3340df64b2e40a18 SHA-256: 0ccc1d55aaec8f0d914796b37bc414183ced69e111de0a656c6928190e263067
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a link farm pointing to compromised CMS uploads and disposable hosting. The embedded URLs, despite some being marked benign, suggest an attempt to redirect users to potentially harmful content. No scripts were extracted, but the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • 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 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://madmojo.com/fckupload/file/61033957316.pdf In PDF document text
    • http://servicedental.it/userfiles/files/53068158356.pdfIn PDF document text
    • https://tierrettung-in-katalonien.org/ckfinder/userfiles/files/71159088762.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/65c7e6db52a38fe1bb47012ea0581fba/81141392188.pdfIn PDF document text
    • https://tagoproperties.com/ckfinder/userfiles/files/43323842872.pdfIn PDF document text
    • http://naosgym.com/userfiles/files/60714966199.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16079f0fc0215b---vozuzilejej.pdfIn PDF document text
    • http://dieta-plus.pl/userfiles/file/50943403828.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/eb76012d745a790a02072f3b1dd9b5ea/67135960736.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/6e446b7ab7885b8a78fc4424c35bb39f/51952186884.pdfIn PDF document text
    • http://cnokorea.com/userfiles/file/20746290333.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/9a6b2601906cb09a1edd833fb93b994c/wibipogunovanufakitefaba.pdfIn PDF document text
    • https://bomberosdenavarra.com/userfiles_nexo/files/16940774617.pdfIn PDF document text
    • https://unibel.pl/pliki/upload/file/91822892823.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/9eecefec841ff687b8edb666ac31a004/zadufebubigadep.pdfIn PDF document text
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/jm4rslq1hgtefn894bls293u2m/69002313367.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b287608e491---xaxudevefusemuwujipaxobo.pdfIn PDF document text
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b16051b7cc---48287046602.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/nalowureromibasuzavez.pdfIn PDF document text
    • https://dpengineers.info/admin/userfiles/file/53082920865.pdfIn PDF document text
    • http://isgsrl.it/images/file/744246383.pdfIn PDF document text
    • http://enjoy.sk/editor_uploads/system/files/9219386264.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/g1r1a4k53ig39jjadmah8je6b3/11678271198.pdfIn PDF document text
    • http://cepsagibyachtfuels.com/images/photos/jamiwaniwi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=libro+tragicomedia+mexicana+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_off00010dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC6 19228 bytes
SHA-256: fb20db806a22d87e3504b5c9a3ca942615dd8d57fbe0623960e0bd785b049890
font_01_sfnt_off00013ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001570f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1570F 10948 bytes
SHA-256: 5803bfbce924e4eb4a249551b140ee27e68f49a9c7d46329da0d2c63c23a6019

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