Malicious PDF — malware analysis report

Static analysis result for SHA-256 64754e2c209cde82…

MALICIOUS

PDF

93.5 KB Created: 2021-06-28 15:02:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 535c16a3d9e7b3bfbe787573c69af70f SHA-1: dec491e80677e490c60020e7d39bf50a80af843a SHA-256: 64754e2c209cde822a02f79a79705c42d33a1d95f4471494e0837e83ddc599ea
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Multiple heuristics point to the document being a link farm, directing users to various compromised WordPress sites and potentially malicious content. The presence of embedded URLs, including one pointing to a raw IP address, suggests an attempt to redirect users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160874d50cb8ba---58741742404.pdf In PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/n77dvalf31d45mgigu8483ja93/14282259701.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16073e2e52dd11---87016912480.pdfIn PDF document text
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/65ad418a3af41c27fba89a47157924a1/99171586660.pdfIn PDF document text
    • http://hutergroup.de/userfiles/file/bawigefomurataxutile.pdfIn PDF document text
    • http://bephoangdung.vn/uploads/ckfinder/files/71236680467.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd05d2db31---puxemip.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/lelerefafelosaz.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021050806540473499.pdfIn PDF document text
    • https://lepjunk12.hu/uploads/files/18717679280.pdfIn PDF document text
    • http://gdaniec.com/upload/files/40150816408.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/uomlubr4rlvth1atuih4jkf29g/68956255695.pdfIn PDF document text
    • https://liantoong.com/archive/upload/files/12678558766.pdfIn PDF document text
    • https://faprosid.com/file/fivazerefutexux.pdfIn PDF document text
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/rmf36h6hdbuorund2609aceo1e/pobiwum.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/56904748030.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16091f343d6f69---38573439072.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/595debafd3c63720236dde68e16a33d2/12005091258.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad45e1881b8---40049975824.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16087af4b0d938---kivibexamufeje.pdfPDF link annotation
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/0af9f8f9d95cbe6be53e2110a8b6db0b/bakolumasoledelexufep.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b039ef2a202---12816656349.pdfIn PDF document text
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/0m4mqsgh1dj58smn56dq0j5omn/korubobamusukutixegegidok.pdfIn PDF document text
    • http://diclenakliyat.com/userfiles/file/dujatetedibudijisu.pdfIn PDF document text
    • http://hieuchuan.com/upload/files/23647953901.pdfIn PDF document text
    • http://findusafranchise.com/files/files/82182555118.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=stamp+duty+waiver+2020PDF 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_off00010a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A96 17176 bytes
SHA-256: 72dea5f7e854936bea51df139a859288daf859f6f234db95a5c316373335cfb6
font_01_sfnt_off0001378f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1378F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FA6 10796 bytes
SHA-256: 8a0582139bfe19e042c8163c2b4a6d551175f6f51e29717267dbab4e5d109e7d

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