Malicious PDF — malware analysis report

Static analysis result for SHA-256 7acc0feb3619aba1…

MALICIOUS

PDF

72.5 KB Created: 2021-09-07 16:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 4db63c6bc7973a6b5ced14215663e130 SHA-1: b9af29ed0f089c45f26345c496f7b3769139cbad SHA-256: 7acc0feb3619aba1d25a5ae8ac322f458c89387068a7f63302278011db463573
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs that point to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://catamma.ru/uplcv?utm_term=flip+flop+elettronica+pdf PDF link annotation
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b0c96b0ab4a---wubuxiresutima.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b36a67bdb---labazalodoluxomipofujogo.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd799878d9---44266241313.pdfIn PDF document text
    • http://www.benyowsky.com/resources/files/sukozawigijegisi.pdfIn PDF document text
    • http://jongauger.com/userfiles/file/zogakam.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/81363047813.pdfIn PDF document text
    • http://zartmobilia.com/userfiles/file/20210710112502.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/pareaqjmp12fha8nvpf3om55q4/gulukokisinomelu.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/1b36e75c4999161da69553c322986f01/29174277787.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/141396a46aa73abaa4cb64fa97d6b150/xixufiwiledozajobipemu.pdfIn PDF document text
    • http://bluefield1966.com/clients/26642/File/48918690793.pdfIn PDF document text
    • http://giasuminhtam.com/Images_upload/files/51852175452.pdfIn PDF document text
    • https://purmoradiatoriai.lt/images/files/709397678.pdfIn PDF document text
    • http://mebizstekla.ru/userfiles/file/82765190329.pdfIn PDF document text
    • http://telegid.tv/userfiles/file/97816722203.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/4d572013f41441335040fb3d08532238/52251852829.pdfIn PDF document text
    • https://carsen.sk/editor_uploads/system/files/regofatil.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/e191d0d19e172c211bbe6a29b1451654/dikisumun.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c51c249dd1e---37044440372.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/59865440c80da318df5fb0744542696b/8921486621.pdfIn PDF document text
    • http://murzilka.biz/images/uploads/file/20904288788.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/gobajumodedaxabetela.pdfIn PDF document text
    • https://local-atlas.ru/userfiles/files/38692742862.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b701dbc728a---rupaleb.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB954 10420 bytes
SHA-256: 1a6423cad60492156cab2c05fef82795940cd5832bf327f0ad2767f07d89a53a
font_01_sfnt_off0000d0f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F9 16984 bytes
SHA-256: d43e669b227e36db7416177fccda0da22be8b8150db332defeb9e3a134cbec04
font_02_sfnt_off0000fca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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