Malicious PDF — malware analysis report

Static analysis result for SHA-256 57827581759ddcfe…

MALICIOUS

PDF

148.1 KB Created: 2021-06-11 00:37:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2227f118d74b2dac25260d4ed36a3b2a SHA-1: 7e0a9450b0d029e80f4f5a21adb0913eb0184016 SHA-256: 57827581759ddcfe5bdb9dfc2b3ac17afe6a32980af79d7b790f20774218f5d6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the presence of multiple external links and the overall heuristic findings point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pistant.ru/uplcv?utm_term=twilight+eclipse+full+movie+subtitle+indonesia PDF link annotation
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/kvhakfb4tsbtci9ok9pcqfthrm/tekazixado.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/1922b46a6f24d0454ac0cd2b95d66bde/juxotuwuxinipan.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3ddc29aec---dazamuto.pdfIn PDF document text
    • https://agatanorek.com/files/file/gubibapevivilewurale.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2ebb7a852---kukona.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/45045397432.pdfIn PDF document text
    • http://vankouwenenmastop.nl/UserFiles/file/fisaji.pdfIn PDF document text
    • http://www.radanhorse.com/resource/files/divesagaparutabov.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ef5573887---rovetanejudulovara.pdfIn PDF document text
    • https://arzhosting.com/calisma2/files/uploads/44854857793.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb6ee8def8---42542123120.pdfIn PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/6a861e799f8073686b62dcba42b96a7e/68009143920.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16074f7c0c64fb---23685473266.pdfIn PDF document text
    • http://heureka-cz.eu/files/febovaputotedekogi.pdfIn PDF document text
    • http://gat-asset.com/CKEdit/upload/files/fesopoxabetisowiralaguzi.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/1cc5b3ebd1e022708059ffffe2a7d2a8/walabedijakaburu.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/firipagaditu.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/c4b7a00829c10f6f7e6c4e0c9913c15f/3383189066.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn 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_off0001f3c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F3C0 3372 bytes
SHA-256: e6200e253ab64e8e0a3c0ba0483e9dc07f32905287cdd6336784ca03d1c51398
font_01_sfnt_off0001ffd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FFD0 5712 bytes
SHA-256: 9032720bf7ba60dd99e90128de33b2acda5e6393f1a45ab1b9fea208d92baef4
font_02_sfnt_off00021336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21336 16112 bytes
SHA-256: bf86b578276b3cdfb519212c6706621d4408b0c665ce8f86ba6e0d843eecce58

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