Malicious PDF — malware analysis report

Static analysis result for SHA-256 341a02e0841c08d7…

MALICIOUS

PDF

89.2 KB Created: 2021-06-29 18:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1c5e32c31b984fdbc23e24842919052e SHA-1: 806cb30a530395f2d35a599dfc08b5de21ebcbd6 SHA-256: 341a02e0841c08d7bed440c5985b40d9773e53267f64f0f9ebe563057ccf1db9
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing and trojan threat. It contains a link farm pointing to numerous domains, many of which are hosted on compromised CMS uploads or disposable hosting, suggesting an attempt to redirect users to malicious content. No scripts were extracted from this sample, but the presence of multiple external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest a phishing or credential harvesting campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 https://kozhikodedeaf.org/admin/my_files/file/susanevijaza.pdf In PDF document text
    • https://tungafilm.com/dorceiys/ckfinder/userfiles/files/pusigukazo.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/9f5f9abcc3a2f869e6995d96c37f714b/64828853365.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/jivukoxusaxaxibeguk.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9118e600a---50309929744.pdfIn PDF document text
    • https://artlabjo.com/userfiles/file/xebagamomamuwanug.pdfIn PDF document text
    • http://daycamhoa.net/upload/UploadFiles/files/zikinurenanonafaju.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8856e5732---33283424139.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/s62g1jeshpolk646j8ts9gl0i3/85051626469.pdfIn PDF document text
    • http://webbuilders.com/files/file/fepamupabevimunemetifodu.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/93f475ab11f6636ad631223f2f7c1c28/62735014086.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a34edc1f366---83786284058.pdfIn PDF document text
    • http://nw-line.ru/generic/uploaded/vigeruvefopojejobe.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce62ec6913---94998204638.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/msb181jis7m7mb8planfl21tv1/77706630255.pdfIn PDF document text
    • http://hainescentreasia.com/images/file/dijajuwususadixogiw.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1606c92902b552---32272652864.pdfIn PDF document text
    • http://briarcliff70.com/clients/874901/File/nuwiloguse.pdfIn PDF document text
    • https://rybczewice.pl/userfiles/file/43260826008.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/8ea7be4be777cfde50f2eeb945982bab/59059091893.pdfIn PDF document text
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/8b81f95c09d6e2959013eff17274354e/56557962429.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=what+is+absolute+zero+on+the+fahrenheit+temperature+scalePDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9d981393d---nerufenukozadi.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_off0000f9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B3 17020 bytes
SHA-256: 5624f1bbb5fa205cba513b0bd71ef404b883cf8f6dd595da82303756b1138b2d
font_01_sfnt_off000125ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125EE 11040 bytes
SHA-256: 0356ff426349697531f4ccb25d584eecb43c6704b0998ddf9e7ad23e3fd9f1ce
font_02_sfnt_off00013f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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