Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2ca3a7e3faced5f…

MALICIOUS

PDF

101.3 KB Created: 2021-06-27 15:20:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 30dc00007bed19d5a9ad42f9b8da683b SHA-1: 4c0d525172779ba2e3481994dc450928f20a2ee1 SHA-256: d2ca3a7e3faced5f4607736bee455e706781177e60f307d19f273fdf69279e8c
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to distribute further malicious content. The presence of a 'SE_ENABLE_LURE' heuristic indicates the document likely instructs the user to enable macros or editing to facilitate execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://windsbs.biz/files/file/50367389692.pdf In PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/p08pf8m714c20vi55m5sdpb8n3/43524005954.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/libmtbf9d7goprl6n09h416f15/5490788895.pdfIn PDF document text
    • http://architettorobertafasola.eu/userfiles/files/ramewitajomemiwekakude.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a8bfc45b68f---40547553368.pdfIn PDF document text
    • http://carrozzeriardue.it/userfiles/files/67417307083.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/a692ccf05301f9baf8c25fdae903cea1/8108212538.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/5d9ad0204a917ccd0fe58b4c1879688a/52476860726.pdfIn PDF document text
    • http://bookblog.kr/data/file//files/35741934708.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/50831726113.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e7affc16e4---letipewezilixisanamasopad.pdfIn PDF document text
    • http://degeninhotel.ru/admin/ckfinder/userfiles/files/gagogagevamifibimasavop.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ceead6c2a---10996962528.pdfIn PDF document text
    • http://rheinmotel.com/userfiles/file/jakegaf.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/3d29061a0047be2a0e003768f8ee6000/97278634527.pdfIn PDF document text
    • http://ijdssymposium.eu/upload/64564240744.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/c943917587b49fdfb0f7796cb05a778c/15444333949.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/459ueuf3up8vhhbvnalb1rfqjr/bunam.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607d81b71bde2---fowusesilamavo.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160989978c3083---65750818844.pdfIn PDF document text
    • http://afra24.com/basefile/afra24/files/biriravamojuferebenuzo.pdfIn PDF document text
    • http://anneadamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/totumefasusagasuzid.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5bebf271f1---polarejuk.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/dalizozaxojug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=scalextric+digital+instruction+manualPDF 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_off000127ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127CE 17960 bytes
SHA-256: ab2c09d1184db0351bfb25df04f439245f8722a9f444c40272bf2fef2468d4c6
font_01_sfnt_off00015624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15624 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E3B 10992 bytes
SHA-256: 721255194d8c8d0faf86bd6feb9b8df51f15271ca56d61f7c0f4a79ade9d1a9d

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