Malicious PDF — malware analysis report

Static analysis result for SHA-256 568943569b2e8311…

MALICIOUS

PDF

84.6 KB Created: 2021-06-25 13:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 5fe455baaa3dbdf37da7f4ac3a9e3856 SHA-1: 346d3224faa07b1abc194a1039c392d0d9fbc840 SHA-256: 568943569b2e83118050414a5603e009704d5b4f84703e467a5e8b6909ab7a04
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised websites, likely intended to trick users into downloading a malicious file. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/55b24321eea8291f5d342e7f63edcb71/65672010510.pdf In PDF document text
    • http://adaviestransportltd.com/userfiles/file/64836453512.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/6887465d19108618bd271ded20f19915/94764220848.pdfIn PDF document text
    • http://www.europesolidaire.eu/userfiles/files/dapakumex.pdfIn PDF document text
    • https://cengilli.com/icerik_images/file/sowasixalegatogobi.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf608d2f9c0---livulumazovabokipa.pdfIn PDF document text
    • https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/b3bae3e73d7f9e455680fd3912ce98ca/27483816382.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/2730d804b7c81cd401bfe492e8f694b0/81736905412.pdfIn PDF document text
    • http://indago-rovigo.it/userfiles/files/vonovib.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/qlue28u6vrgh3psfmmf6h6kmnc/lodula.pdfIn PDF document text
    • https://gloriouz.in/ckfinder/userfiles/files/pumetipasulemi.pdfIn PDF document text
    • http://jnafarms.com/clients/864068/File/29389538306.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/d148866cae7dbb7b3b5bb113a7871e00/kagomubadotovoniwereralod.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/2b26793423c6d0c463ccc1f88698e3fc/94168586013.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/24664786498.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160be41b7a2b78---76935989437.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/8ceb02742e121967b79329d368b881ad/18076106968.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+save+pdf+in+mobile+chromePDF 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

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_off0000e7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10009 11168 bytes
SHA-256: 939c09d70f3f83dd81bc8ba81a824597a619e7054c369b2f43686f74c098b638
font_02_sfnt_off000119b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119B0 17172 bytes
SHA-256: 29b1aace41e3636a5ac94c7428f5d2065ca8b549a31b047839e80889f4f5c4bf

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