Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b024486b5139fc4…

MALICIOUS

PDF

89.8 KB Created: 2021-06-29 22:58:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 471e928bb1ff6ffb049a20026ea19757 SHA-1: c723f9208a6c7cfe16b5a8d09e22d4401cb85ccc SHA-256: 7b024486b5139fc4c20c967f655f9371a1734890e6ce3b75237c0675f1eb8685
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It functions as a link farm, with numerous embedded URLs pointing to potentially compromised websites or disposable hosting. The primary purpose appears to be redirecting users to external sites, likely to deliver further malicious content or solicit sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://inwebjor.ru/uplcv?utm_term=hiccup+grown+up PDF link annotation
    • https://cape-electronics.com/media/file/42550675576.pdfIn PDF document text
    • https://haltia.mx/sii/ckfinder/userfiles/files/13715184017.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160a26fb9cee32---14459694811.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d36ab4d639---gipesudulidavipifulude.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f48331bdb---zebem.pdfIn PDF document text
    • http://healhumanity.foundation/userfiles/file/zomufar.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/515edc5ad19fc9d7f5da47fc14c97f8f/wogowodivanapi.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609601e564132---73340513718.pdfIn PDF document text
    • https://lasvegasrebath.com/wp-content/plugins/super-forms/uploads/php/files/14386f2091c2afeced158bcfa6516cc6/1176778185.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/ufkjiqgs8q1c84mr0k9kigra0i/figubenesubiribadefivibe.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/4c7056bdbc7ffb9aac2763c256b5ee39/59232748555.pdfIn PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8a5a309578---wazatipawaduvekojod.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bafb08b7ee9---fakigafimubizozob.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a64c35e4---rokikokufadutovemawimudez.pdfIn PDF document text
    • http://apluskleaning.com/admin/images/file/80472933727.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/dead25b819f256e9b6278b9491be5c76/17525841610.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/s8a9cgi8ce90q6as0oh345sokb/soxubadegozenakife.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbb6060413---96228925357.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071d240450af---bonoguxive.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/ed18fb406d5e79f830f5d161de45a350/nazizadisatulalopovewa.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607adaab0822a---toguvivejase.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb15a02c64---93520643529.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/dkhcg6ep392anvpnleamac06go/legumibexepoluwutegamo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fdeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEB 10120 bytes
SHA-256: fe1d2c4a71033b2c58d57c42febfe3317bbccd99800cedd98e56e13b6c21f35b
font_01_sfnt_off00011493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11493 17064 bytes
SHA-256: 0209443a11627f18bb38fd4b15ee509c2a18a1f5d8eb8304deb377cdc9b11596
font_02_sfnt_off00014111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14111 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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