Malicious PDF — malware analysis report

Static analysis result for SHA-256 022d49c284c5ebf1…

MALICIOUS

PDF

87.8 KB Created: 2021-09-06 09:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 14cb05d7806ff944b025e7dd4afc101f SHA-1: cabe18113e44b00e7ce2d7ef64fc16bded8f87c3 SHA-256: 022d49c284c5ebf1a49034b45003082ca2b59a7356b701fc07b18996c022873c
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to potentially malicious content. The presence of these links suggests an attempt to distribute malware or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609270dbd9484---sukasalazofotikasilog.pdf
    • http://pivotal-technologies.com/userfiles/file/33881291155.pdf
    • http://spc1962reunion.com/clients/c/c5/c535eb5d361035e84cedf1152ec4da8f/File/muzugafovawuzotubolig.pdf
    • https://506hlapeta.com/files/file/balekuvenemofosoxoveka.pdf
    • http://richmediahouse.com/admin/uploads/file/47778738068.pdf
    • https://speakingparrot.com/upload/ckfinder/files/35579309905.pdf
    • https://eventaipei.com/upload/files/63429265432.pdf
    • http://keitbg.com/images/files/44799067324.pdf
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/7ugc906jdjhge40imcgb2l014b/lekevenite.pdf
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/532900a7df1d119469538ca83f7bc9df/tumuxapaverikusuzanowavot.pdf
    • http://drive4smilesquebec.ca/clients/f/f5/f58105ca183540932673f5bf18e62671/File/tekiv.pdf
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/cca53rf8mpnnlnh7479nmhh68j/39118204648.pdf
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160fcb4b8c0243---guroniligogubuxi.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/2fd3b3bf1a9b02c93204e8198270b6e7/jazul.pdf
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/egb2s7mbpfab5t7iqdhppm4bjm/dalikizapesegafibekowipi.pdf
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/f71675e8050194348a6b83ce4bf5d56a/38238168973.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611326203c97d---59801973133.pdf
    • http://takeacode.org/user/d41d8cd98f00b204e9800998ecf8427e/file/nerodonitukijudolifujav.pdf
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078d8915037b---xokizopa.pdf
    • http://akvari-um.ru/userfiles/file/xorimogixigutoboveponuvur.pdf
    • http://ylplj.com/ckfinder/userfiles/files/92899711845.pdf
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/40b4a04856c7d9b573381f448166e42e/vugatanametoges.pdf
    • http://talleresjpg.es/img/file/vebonuvonedapidifud.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c33b818205a---22806048060.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=philips+sonicare+6100+manual
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e596.bin
62e81639a5376e1fbda0ed6b7fafc42bd2302d80c9a07a01e482b15e49c1b280
pdf-font-stream PDF embedded font (sfnt) at offset 0xE596 10984 bytes
font_01_sfnt_off0000fee2.bin
1f93feb8b76a58dc38b4ccb539b4ed6cc176ba702bbf95f36b9eb8b9ddb538ab
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE2 22852 bytes
font_02_sfnt_off00013964.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13964 16792 bytes