Malicious PDF — malware analysis report

Static analysis result for SHA-256 c80446b31063ce1f…

MALICIOUS

PDF

84.6 KB Created: 2021-09-07 15:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 99e2fe0ccf3123aace6e9030c8f1b87c SHA-1: 8032a1a05a333669f6c5ba2dec6d8206d4d10342 SHA-256: c80446b31063ce1f6d3b90916157141c0b12af3fd54c2d9c561dd4e6e83a8d87
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm pointing to multiple compromised WordPress sites, a common tactic for distributing phishing lures or malware. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted, but the presence of numerous external links on compromised infrastructure suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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 https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0dee0b1677---31817207753.pdf In PDF document text
    • https://jodhpurtravels.com/nbloom/fckuploads/file/fefuvepavirumedidawego.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a273ec77bf6---vifuvibupavitikosese.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/96159434521.pdfIn PDF document text
    • https://snowcat.pl/admin/ckfinder/userfiles/files/nunoxiredatolas.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/l47v6r7gi1it0rptffe4kn26jj/93859288838.pdfIn PDF document text
    • http://cke.hk/userfiles/sakomesuw.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/37549282035.pdfIn PDF document text
    • http://almawred-sy.com/files/adminfiles/files/wenosolavefatebajab.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160785d6ee7b18---lolasoxoxuzenole.pdfIn PDF document text
    • http://redemaisfarma.com/userfiles/file/25979360636.pdfIn PDF document text
    • https://kopari.hu/files/file/tasusipimule.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/totunafifiwatosetalomit.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/494fdb6564dba18383521f85059a1e4c/megibebefisuz.pdfIn PDF document text
    • https://citytrafik.nu/images/file/sujitutedip.pdfIn PDF document text
    • https://netron.pt/app/webroot/media/files/xesisalowajazos.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/semipojogegelavunako.pdfIn PDF document text
    • https://tunhuaduytan.com/upload/userfiles/files/25591373790.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b89b5389b3d---68670775225.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/9d7c785657dbe02639b0e11e05839254/85174539569.pdfIn PDF document text
    • https://hoangphatdanang.com/uploads/image/files/rokuramuloxasidevugilo.pdfIn PDF document text
    • http://abimobiliare.pl/pliki/File/govewatodulabizojom.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/0dbaf71bd8380f872ffe7d3a81c443e7/46498090439.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/71185467155.pdfIn PDF document text
    • http://luluscafeonline.com/uploads/files/39471684422.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/cc064842df665d8f61a2e82ad8998507/boserevupoxubidusixi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=comment+supprimer+page+pdf+macPDF 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_off0000e1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D4 19044 bytes
SHA-256: 1bdb5220dc9e4292c01af0a5905c1eef1cedaedbb3d8e87c893e3f5c0c2fb646
font_01_sfnt_off0001131f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1131F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B36 11048 bytes
SHA-256: 5c7752ccc28130fdb234407bf8b345b6d8657bcd8b86c636d355b3f3092212ec

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