Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0eecaf3011e03a5…

MALICIOUS

PDF

75.5 KB Created: 2021-07-26 23:59:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: af752f2c9873926c0b419060de54e323 SHA-1: 192eaedaf24f19cb2afb191d0d2b1b7ee316bfdf SHA-256: e0eecaf3011e03a5153ed7e9f958c739e4849d2ffeb03d45d2c160c827f2c361
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, while some are marked benign, are part of a larger pattern of redirection to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a81903285e5---49751511313.pdf In PDF document text
    • http://sweetbasketsbyjackie.com/clients/864293/File/roral.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/792d0b1002f6061a3ea1ea20faead542/xedowimiwu.pdfIn PDF document text
    • http://slanfusa.org/clients/47225/File/bodeguje.pdfIn PDF document text
    • http://backkwang.com/userData/board/file/69247071406.pdfIn PDF document text
    • http://studiorestagno.eu/userfiles/files/71765655682.pdfIn PDF document text
    • http://harryreichert.de/uploaded_pics/News/file/nubomebipazitabikase.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/679bb6a2961b9d123ded6977dec1f073/remoxatobo.pdfIn PDF document text
    • https://misionesmedellin2030.com/wp-content/plugins/super-forms/uploads/php/files/mfkovg9r9of4vqi6h1abg10paj/wevifamod.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/nowakiduritazoranerixit.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9838a639d6---31815800823.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/nvs5couegdunvar57he28aimm1/569557607.pdfIn PDF document text
    • http://www.iece.in/userfiles/file/64801688820.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/382d3d4b1c17ba8880b8d63ee6820200/vageje.pdfIn PDF document text
    • http://kinocosmik.ru/sadm_files/94769859538.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/nojubinogo.pdfIn PDF document text
    • http://blankheich.de/images/uploads/file/19550974270.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e6f035ab9---28595226828.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/1hihepm2busfan63vlstuqrul5/53960517687.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc3a668cab9---67546185374.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/6l9pd3nplc1k0hopho7djdjgc1/67149013075.pdfIn PDF document text
    • http://tecsun-moscow.ru/docs/file/98072060512.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/95639264871.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=how+much+is+a+coleman+5000+generatorPDF 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_off0000c38c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC38C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000db9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9E 16600 bytes
SHA-256: c53115bf1acc6f9b67092c0d3b9a62006b66d11f2793ac840793d90ddbb014ac
font_02_sfnt_off00010670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10670 11112 bytes
SHA-256: 02d724e902ac3d5082e234436787cfa3af7004942fbdca5459729ff8ea0fe67f