Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd64befb16790cd…

MALICIOUS

PDF

85.9 KB Created: 2021-06-27 20:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 35251c4c5b7079f5dfd0145a534fad89 SHA-1: 11819f93f6534ede36e6409310cb44c83a1dfc3b SHA-256: fbd64befb16790cdf2ed3dbdf3fb6e74c92d1930781eaf0b99a3431b4d1b0a97
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains a link farm pointing to numerous compromised websites, many of which host PDF files, suggesting a phishing or malware distribution campaign. The presence of multiple distinct hosts and the use of disposable hosting indicate an attempt to evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://newtop-eg.com/userfiles/file/85292084435.pdf
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b0542daa9cd---89876384816.pdf
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/jc01te3ijt70s3looqlubvfeq1/jotuvujuvuxe.pdf
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/f99a7e6f4e2bacc0f377af2a8c9e13f3/xusafufedavukigedefosa.pdf
    • https://aspirans.com/files/file/86950972726.pdf
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/e94a0c079c8d0fa6aba53209ef2ce82a/gitapedugajepugadomu.pdf
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c03f3a4050e---26446549681.pdf
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a811488ea22---35808946342.pdf
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/d620n5ciqv1mj8vugladt62414/siferozebubidakuduriz.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cb481cfba---19054316357.pdf
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a47b0dd77---53663567075.pdf
    • http://iproperty.ae/userfiles/file/barekomobitexa.pdf
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16084f6e8aa873---wufuzuzatidal.pdf
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f3eb2b443---93059448183.pdf
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/16095ac19886f2---74768482306.pdf
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/2196bfe1e47f746d31476b16ad0ce442/56486114250.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/so16fcg7hose4lb1cshh4psdu5/nifotogonisedutitesadifuz.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/6uju2084nh7hqdh0o972tsist6/32503964559.pdf
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a574ed52cba---23096808039.pdf
    • http://sklepjola.pl/userfiles/file/vabulelisezodanagutanona.pdf
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d845251cc1---sewegodikufo.pdf
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5b1e34b90---taveguwirepodajudowif.pdf
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/f1d01d33ed418ae0006f960052f99cc5/geded.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=picture+puzzle+answers
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec14.bin
0c480525f41511f420a00ea712e2dd06837ebe306a3158b4f32a0976114a78ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC14 17648 bytes
font_01_sfnt_off00011a6d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A6D 16792 bytes
font_02_sfnt_off00013284.bin
dc0fb8957dab3d39769226a70be2ccc01f74ed6bc423cf9d7eb19fa47246e005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13284 10496 bytes

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