Malicious PDF — malware analysis report

Static analysis result for SHA-256 6706a2105dd43671…

MALICIOUS

PDF

89.9 KB Created: 2021-07-17 02:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 8d6cdddadf8e7c6979970f6140f5bb07 SHA-1: 41f442dd00529b248a670f4b61990922373810ca SHA-256: 6706a2105dd4367148a3478245a580f9444cb7d5d8a63e9489bce6286c2af952
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as phishing or a trojan. The primary function appears to be acting as a link farm to distribute traffic to potentially malicious or compromised websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://prana.video/wp-content/plugins/super-forms/uploads/php/files/pv9s9u94304j2bbjihsq3l15sg/43987347199.pdf In PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/eod513k0f5eeemledfoo1342op/473094639.pdfIn PDF document text
    • http://shuswapladystriders.ca/userfiles/file/furirasobovesoxasite.pdfIn PDF document text
    • http://victoryelectricalsupply.com/ckfinder/userfiles/files/155237003.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d23438848---vitamolivovina.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/50180843777.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/05413a87f3fdcea9a1bc576287fe98b1/9810195346.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070e1cd3f667---67502049094.pdfIn PDF document text
    • https://daynexweb.com/upload/ckfinder/files/52905788181.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/h50ec72t0ak2shtk3vcbaiv1pf/vefidomokaletu.pdfIn PDF document text
    • https://agmatbaa.com/upload/files/kuwamopuwin.pdfIn PDF document text
    • https://netron.pt/app/webroot/media/files/dezobebukib.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/xafafilumef.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d86ef403d4---8562216906.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/1a133a9dc767882b0e919ffb5b0dbf80/sarari.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/92fcsno8npsdj3bi2t01osrhd8/xuperasujikaxisixo.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b7588694663---melojukagenibavumo.pdfIn PDF document text
    • http://bjsprt.com/uploadfile/file///2021051814013388.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/8ad0b4571f227960df66f35870eff77a/fadokufipomuma.pdfIn PDF document text
    • https://altonika.pro/files/fck/file/82877967225.pdfIn PDF document text
    • http://andrewsexes.org/clients/867461/File/68371027725.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9afa197cfe---46515512851.pdfIn PDF document text
    • http://thriftstorewebsites.com/flash/thriftstorewebsites.com/file/muzamimiranoduzagotapo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=raw+blue+kyanite+meaningPDF 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_off0000fced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCED 17176 bytes
SHA-256: 58e2ba8df896b3e4b2ec6a78813138c8863e115a04bc5e4e8937b74436200071
font_01_sfnt_off000129cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000141e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141E2 10640 bytes
SHA-256: d97e628e88a3f088f28f032c218e49f3af86e51e6458332723437addfe899a99

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