Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a3a33ffd189626…

MALICIOUS

PDF

211.2 KB Created: 2021-06-28 07:27:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7640f22af06235b4467910a1785290e3 SHA-1: 851fa6da3198690911292f5514bf1e6b9abcd79d SHA-256: b0a3a33ffd1896262767c2ad3f9e9ff309d4549276ad43b6392292a08413228f
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a link farm pointing to compromised WordPress upload storage, a common tactic for phishing lures. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9938

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f71a904303---66163717426.pdf In PDF document text
    • http://aven.su/userfiles/file/68829910785.pdfIn PDF document text
    • http://chinajnbt.com/images/upload/File/4162766717.pdfIn PDF document text
    • http://samurairamenbar.com/uploads/files/giwubuvagowura.pdfIn PDF document text
    • http://goteneplast.se/files/images/file/waketomexiduj.pdfIn PDF document text
    • http://fitviewer.biz/files/file/83638118278.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a698570fdb2---78533781053.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/1k2shguggnqr1of6utamh6cpve/bajumisazatow.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/ladakevazokefezasu.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/4209f8a4e946533ba1928a08712328fa/54336015450.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/7p81li320hksurkhtnj6orm3ap/padutatamipiporox.pdfIn PDF document text
    • https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/1354d0263326823572b2b5cb31911acb/78529414181.pdfIn PDF document text
    • http://babyindex.nl/images/uploads/19974520641.pdfIn PDF document text
    • https://blsautomation.com/ckfinder/userfiles/files/69894209244.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607da6fa06402---vedigolevuvalirusavorenuj.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607060cb5391d---46257151524.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa203748057---sakibijopofigi.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/00279e806ae09b913e7679ae2bddfd61/75038627137.pdfIn PDF document text
    • http://shssailors1969.com/clients/3/36/366f78b21138e0f8005dfe6cc5e09e30/File/9065406689.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/3474175db6ad377292d086fced46770b/fibozevovesege.pdfIn PDF document text
    • http://alrehabourhome.com/userfiles/files/sanetezomisusabewibet.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=plant+and+animal+tissues+grade+10+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_off0002d575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D575 21960 bytes
SHA-256: b58b4c91dd00f660ca19f384a54151c7e916a638ed486d18ee5ff537bef4851e
font_01_sfnt_off00030d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D6C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00032583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32583 10996 bytes
SHA-256: c1ffd72c00e23997d2fbd79d4e23c79128add91ab64cce1ca55ce29e3f005386

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