Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad225494719a10dc…

MALICIOUS

PDF

81.9 KB Created: 2021-09-05 02:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7430c69ccde031f071c939bad4079c85 SHA-1: 74a39c3c9d5b61f6faeeb311e2735c01ea05ce7a SHA-256: ad225494719a10dc5371cdf2c837589fd86d65f47d2ea6a3a7a6a1dbe50b1167
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://epiphanych.com/images/file/sumedibejojomesarudu.pdf In PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/1c115624a979dee5848f13cd168042f8/fogelatonesoligove.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/ta7fouj5bul9sv3462vpkl4qbd/danevofazaxomedenola.pdfIn PDF document text
    • http://ztkammer.at/uploads/file/3042850024.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b610efb84---58513445171.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/9df3cf3d364cda9515b2603f9cdae384/lumalibonozemedeset.pdfIn PDF document text
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/8681e35418c58ac3a61c08717b2204c1/momiwelikefopokapefuza.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/tuwanus.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/02080be8857e0294cb93055993fb9fed/64222306888.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b99ed2df6---zurojusamagine.pdfIn PDF document text
    • http://poptheme.cn/uploadfile/files/20210821_060540.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609889e1a8d26---50362549689.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d9e35d37da8---nonisubewodevipebusuka.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/f7ct2h9c9kaj9m5nbrdqt6dl01/36958239464.pdfIn PDF document text
    • http://www.gieskestukadoors.nl/ckfinder/files/files/pobiwiwife.pdfIn PDF document text
    • http://growlink.biz/userfiles/file/wutedopuko.pdfIn PDF document text
    • http://yao-cheng.com/uploadfiles/20210620225114.pdfIn PDF document text
    • http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/mavapitudepisikireri.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/0e4ba7152ff93728e10030186458cf60/61126708782.pdfIn PDF document text
    • https://poolpoint.be/uploads/file/83563092618.pdfIn PDF document text
    • http://autoscuolecasetta.it/userfiles/files/37339045201.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/bad790b0c85c11d35c42a218c7135917/24640554144.pdfIn PDF document text
    • http://onlinepravenconsultant.com/uploads/wysiwyg/files/dusopiveju.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=pole+emploi+attestation+assedic+employeur+pdfPDF 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_off0000d98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A0 18056 bytes
SHA-256: b0e73b2a7e8f8bf791d0599a4b1c9fb0e2f67ed68ecc8f656fdf4a37678201b6
font_02_sfnt_off0001203a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1203A 10996 bytes
SHA-256: 6470f716da9ff05c0ac128968b08a9d2e4955542c570ed8370571f5cda1aea9b

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