Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a432ce6abd3bd66…

MALICIOUS

PDF

97.7 KB Created: 2021-07-04 03:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 36bc7a87b10acea5477bb79045e637e0 SHA-1: bbf3ba367a00b34aad8ea40aec274952ca12677e SHA-256: 7a432ce6abd3bd66572335b74d21a2e23003cb5399f8c12b1bc0eebe8a49f552
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS upload directories, suggesting a link farm or phishing lure. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ad2ccd3889c---gurogabubu.pdf In PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609064b667eed---66444419061.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/0vroh6btgl6fsmqomckppeu1vr/60940500294.pdfIn PDF document text
    • http://icmasistemas.com/userfiles/files/xopep.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/stqt3iv5eetpvcaj1flqt55r1m/xibasumagorererujobiz.pdfIn PDF document text
    • http://mitsubishilongbien.vn/images/ckeditor/files/mejudonekez.pdfIn PDF document text
    • http://thuephotocopytaihanoi.com/upload/files/62729904300.pdfIn PDF document text
    • http://www.niziointerior.pl/upload/file/30812889571.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d39309e70ee---sajagopaberivevomanevegiz.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbdbd03cd2---sedikisipodujokanofeza.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d9d526624---77595177415.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/0ktupn1efolijkfcg27kg7klbf/nikobakox.pdfIn PDF document text
    • http://rotang.net/userfiles/file/kupex.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608e7d1ba97af---74324961052.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607d671e943df---kovobi.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/h3hecohpbdpsdl9gmv8aa1e80r/renesubejef.pdfIn PDF document text
    • http://bettaletroom.com/file_media/file_image/file/81372961598.pdfIn PDF document text
    • https://acryl-bg.com/userfiles/file/xudijimiraxe.pdfIn PDF document text
    • http://www.chatanakonci.cz/userfiles/file/susiraposulu.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16077d3e3b9718---kituwudixekasu.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/e49e6e204c7e927bea516562e7a14e2e/97215137703.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/9cb4770ef8e0f6dc7ec6750e11e42647/malipepojokowom.pdfIn PDF document text
    • http://anneadamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/84627428071.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/afdotbrqlgmvhsnrjumgttqln2/jonugivipikexodunev.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/964b9fa3abf3eeff45897388b3078f63/wuboku.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=contemporary+double+glazingPDF 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_off000119c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000131da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131DA 17220 bytes
SHA-256: 7dab1037ef6ac9878dd4393682d83fe341b9af11f58db4c2d505e27f999dd0d0
font_02_sfnt_off00015eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EB5 11012 bytes
SHA-256: 41efc8f5708961c10a37860fd3b0b353e766ef7cbc5243c55519b4fa484e038e