Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30f334de8041bb7…

MALICIOUS

PDF

86.0 KB Created: 2021-06-25 12:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 3f983dec04c3e5b8b8d94780cfcbff0c SHA-1: faa3e86a611b184ccd5ed226e283560ceb0f8c4c SHA-256: c30f334de8041bb7c91e742f296f7bb05e6a79ff1f40c69ac0236d2fb0e66189
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that form a link farm, directing users to various domains, many of which are associated with compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://pixomot.ru/uplcv?utm_term=clap+for+them PDF link annotation
    • http://gpmpoolandspa.com/ckfinder/userfiles/files/wapodexesulo.pdfIn PDF document text
    • https://deltarents.com/upload/ckfinder/files/xibomodop.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/p5lguje1n2bvhmdkve27ueosmr/65292240217.pdfIn PDF document text
    • http://gps-tw.com/CKEdit/upload/files/82092103058.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/65463437894.pdfIn PDF document text
    • http://www.deep2001.com/images/library/File/sixoxubifozudo.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160822b12e0fc3---8338250534.pdfIn PDF document text
    • https://patc.fr/imagesfile/43461315126.pdfIn PDF document text
    • http://servis-hradec.cz/files/file/92285282301.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160881bab701d1---1592377362.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c69cb78591---49703178363.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/2b434ac9415c255255c58bad767ed9ec/tilipulavuzanomek.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/eb3bf0b024430500e8874d4f84422314/xaxobofanikisi.pdfIn PDF document text
    • http://aps-mes.com/files/file/6039359141.pdfIn PDF document text
    • 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_off0000edc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC9 17816 bytes
SHA-256: d56c1b388807b3da9eef3d27f54663b7d1cc4787d4ab4f5e3872b2e6f437b7a1
font_01_sfnt_off00011c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C9E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000134b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134B5 10288 bytes
SHA-256: 234e5374a93e57839d08338f79e7555de2793b63f70ea29ca43e1d3be1637be7

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