Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6b741c3086eb3c…

MALICIOUS

PDF

217.7 KB Created: 2021-06-29 14:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 86d0b674106f9ac5852a410674cf6771 SHA-1: f407ba4dc01a6ba5ee5a64abe4a7a2dc6beb1f3b SHA-256: 0d6b741c3086eb3ce7f99e13a9b5f4e0f9714a1deb004f2d6c7bf214d32528da
174 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a link farm and SEO redirector, designed to lure users with a phishing pretext. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary IOC is a compromised WordPress upload link, likely used to host the malicious PDF or a subsequent payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9772

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160838ef07c08e---xasisasawigu.pdf In PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/jejudevimesilixagosub.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/adt13748b1qlvi4n8k9r5nag97/22244803151.pdfIn PDF document text
    • http://wsm.hk/images/files/vogopigewesu.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/a0na2cpd4aui9er8qv2gvff4ts/ginagibesibovutizuderor.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/8427683078.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/323d4aa92c53b578979d1fd3de1aa240/zoterimorixafateresa.pdfIn PDF document text
    • http://greathorserider.com/ckfinder/userfiles/files/72025629979.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/5140469248d14ae95dc4fb43cd05d2fd/witikes.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073215e9fa67---46547649720.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b6dead95cd7---xexizakizonadi.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/17db34ab66723fc45c28ba279b325b09/mibalapotetuko.pdfIn PDF document text
    • http://bidhichand.org/sahodyatarntaran/userfiles/file/45153555040.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/cef9469bdb9571a71a8f8d49ee5e72b2/2540393084.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c28badb8e4e---jibawenon.pdfIn PDF document text
    • https://yucekalipmakina.com/tsrm1/img/userfiles/file/lekojonokumefaxadinap.pdfIn PDF document text
    • http://cosmikkino.ru/sadm_files/nitakovotusasefenisixax.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/6e9ccb9b0ed829cc7c5658a70ec008df/63461227122.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/a7085964d9caaeb83a21b67fafd15073/26718364401.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/66cd4bf6385eb2336c13b795c0d15b2c/77486441077.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/ie8pa27oljg364qdht9ilmc324/1836189112.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160c49f6564793---85866884826.pdfIn PDF document text
    • http://bartuceviri.com/userfiles/file/96929505848.pdfIn PDF document text
    • https://iamtimeshare.com/userfiles/file/48304655552.pdfIn PDF document text
    • https://iphonerepairservice.nl/app/webroot/files/userfiles/files/fewisovan.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=30+second+to+mars+chordPDF 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_off0002fb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB1E 17816 bytes
SHA-256: a1d9a506c59cc1d8c87b62d4cb8d20e3edda5367a45d4cb5063ae7c5ba25b987
font_01_sfnt_off000328c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328C5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000340dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x340DC 10692 bytes
SHA-256: fc648cf8e4a99ad4a1646e71dde6a6a6ea04f1d12954a5cb80cb320795d83df3