Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e46e00200defe3…

MALICIOUS

PDF

101.4 KB Created: 2021-06-29 00:01:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: fc5d3ec7cfc0ae4996686c6b656ad696 SHA-1: 7a50980d4aa620112d746c02add261480623eafb SHA-256: 56e46e00200defe3055f853e51401d7171eb5074d29b2fe2567dd4bc35c86d07
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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://chcial.ru/uplcv?utm_term=mucus+at+the+back+of+my+nose PDF link annotation
    • https://affordans.com/ckfinder/userfiles/files/76737665510.pdfIn PDF document text
    • http://savitaco.com/uploads/images/files/varuligeme.pdfIn PDF document text
    • http://xiaohecollege.com/d/files/mulufuwaxakoxaxadup.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/6d29a227e9cd629d956801802d079551/ragazusifokotuw.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607943c5f4133---5901591105.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/88790809418.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a26bc33eb7e---82993090683.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160959de8d23b9---xibimabizefij.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/20805682713.pdfIn PDF document text
    • http://riggi.ru/userfiles/file/gezamulek.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b13be3f28---mifenubakig.pdfIn PDF document text
    • https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160815b3151087---69073022524.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e301bb3bee---11430627282.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082c4bd09646---ribijototonapowidopowem.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/xedirurokimebu.pdfIn PDF document text
    • https://isosklo.cz./uploads/48980892113.pdfIn PDF document text
    • https://computerzone.pk/file/72543741535.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160743c80dabeb---suxilibatavafol.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/007b19a899a6a73ba4da42aec38276d5/72913850493.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/numopumusasuxagafare.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/2a8496841e95b6464a9b1f17932aed98/70116779223.pdfIn PDF document text
    • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/6858ffb308c13b01cd8df5caf2eef880/33910527863.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/a2cef4c73ee983671fe1c1d91b0ce57d/jumanumewakiwu.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acd81c27dae---vuzovufiwiz.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091d13125ff1---xulipelutipive.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c404ed6a89---wuwixidugeresotalal.pdfIn PDF document text
    • https://anfauglir.com/images/file/paputi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001282f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1282F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14041 17432 bytes
SHA-256: 602380e910a03c010ea3163945d0cecc9819dde24627e43003ce99e78751ab67
font_02_sfnt_off00016dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DC7 10800 bytes
SHA-256: 59bcadb963eddbfe7a0e3b9a4ebb22b16ead1010e05974e106166f90550ed102

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