Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b873e67c016811…

MALICIOUS

PDF

126.7 KB Created: 2021-07-01 09:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 325b391f7a18141608cf3f21c7bdcf32 SHA-1: 7dc10c4c63a6ac367e294dcd64ba87edfe667720 SHA-256: 46b873e67c016811bf656ff4a52a45aa19a7f1e69d78fe3f16bd0c2b20582307
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to compromised CMS upload directories and disposable hosting, suggesting it functions as a link farm to redirect users to malicious sites. The presence of urgency lures further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/mm0vsqoj2sghvmujl40d1fmp52/89948346456.pdf In PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b48550c17f3---saladopomitigupoxulifiw.pdfIn PDF document text
    • https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/hd2991hd04avfkmmbagoibt4k3/konasareso.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070347a87277---50696557406.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/vei03mcpbe7q2u54rfg1lqg333/joredugoravu.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16076f5d608c2f---96733487674.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/ppsp6vjosq08i5kujql3deopr5/kawawiv.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/aa0d373626f20c904dd4331abf4e6d50/niwuxetakunuxug.pdfIn PDF document text
    • http://mobilephleb.com/clients/2/2d/2d2188d13063160162e6e2bbcdac547d/File/26910002522.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9135c1910---17970134851.pdfIn PDF document text
    • http://cohensevents.com/clients/74638/File/73221776214.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607534927a059---pomemefe.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-6-15/20210615003436255208.pdfIn PDF document text
    • http://hometextiles-consultant.com/ckfinder/userfiles/files/zimoxudigarefoserojide.pdfIn PDF document text
    • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/bc987d0aef367fc5330e4b046c86abd5/71220467543.pdfIn PDF document text
    • http://wecans.net/_UploadFile/Images/file/xajusofibiwirejobogasi.pdfIn PDF document text
    • http://aihyang.com/userfiles/file/14662280179.pdfIn PDF document text
    • https://activepymes.com/pub/file/suriridumadus.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160ac480c88154---73626023297.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160739060ed41a---dimetulabuzunud.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/0338f662ebf3bffa709661abc69015aa/55462528746.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a255aeb5492---xazodibopuzemedide.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608df9eeb78b9---82872440010.pdfIn PDF document text
    • https://rumusjitu.com/contents//files/25779466691.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=todd+gurley+madden+mobilePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DE1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001a5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A5F3 17440 bytes
SHA-256: 7005ce38e93d47aea63cfe551186c74bbe2eac469fec734fa7ae3df0c6282954
font_02_sfnt_off0001d3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D3CF 10644 bytes
SHA-256: 8ed029a22d0301981b6cb523f667bf43b1a1ade35c9e58f5ea44500dc4f8ab95

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