Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba2f8e48d05670e…

MALICIOUS

PDF

97.6 KB Created: 2021-07-01 21:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 45f0891bad90fe22f9566ba16a5e09a8 SHA-1: 0d918a0d3327984dbb8869bb74a1bcebf51601ff SHA-256: 8ba2f8e48d05670e2fea3a4689d8d252e7118b6c03d7f582f47b1f0ebeca1f9c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. The PDF itself does not contain readable text, but the presence of these links indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://oniceh.ru/uplcv?utm_term=clean+raps+for+roblox PDF link annotation
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/6e2841bf09838a24f75403d2ec8c6ab7/tujovepawexanugitimu.pdfIn PDF document text
    • https://tenfci.org/userfiles/file/favagofutivekiri.pdfIn PDF document text
    • http://aquatherm-graz.at/files/32902276824.pdfIn PDF document text
    • https://irantruck.ir/data/file/44394451407.pdfIn PDF document text
    • http://cathugo.de/res/wysiwyg/file/78270922550.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa66cb8f5f---6339304728.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f856b4147b---38703472854.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/1e36ucm9qf79ijb3o4u1ct9iso/89155505733.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0577edfa7f---14095429045.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160daba4203d80---fiforaxesulirevidutifojig.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160723a07efdb2---pifugujumixumolo.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/6d3916dda52f507d3c4b4191e93f2a61/90078004286.pdfIn PDF document text
    • https://hitourkorea.com/FileData/ckfinder/files/20210614_44E615AE657CABEE.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a5e0b6d09c1---jozogalubosexozav.pdfIn PDF document text
    • http://bamila.vn/luutru/files/2366028632.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1609b95ced38bd---sesenemuz.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160779dba60df2---77587844617.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/miig35v264n190a8vdplfhirqa/jeditejix.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f303c563d0---95237134460.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/cdfdea1c1eb10245b9fa441011ec063a/49833740765.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/44041762486.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/897bf14ded1909de67282d9efe26091f/10509575183.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16082c6b40ad98---nivukizajepivof.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160908007ba662---kokajamisukukipe.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_off00011bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB3 10436 bytes
SHA-256: 90829f4c5be6fffe5c4c5d1439dd4859b1e2cfdb7d33c03efd3a652f944505a1
font_01_sfnt_off00013345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13345 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014b57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B57 17516 bytes
SHA-256: af78b951ead505e7ca1b1f1a542bc6f059448b1093af227f859ecf14fc14886d

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