Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c6fbb0b70ce654…

MALICIOUS

PDF

257.4 KB Created: 2021-06-25 22:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 12fe7aab63a19233143f4f49f704130a SHA-1: 9a30fad8fecd493b642f0fb932ea8ace063aa45a SHA-256: 93c6fbb0b70ce654ddd1e641c0c1ce5b64bbd5144a07b9d692d1dab67e607433
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF phishing trojan by ClamAV and a machine learning classifier. It contains numerous links pointing to compromised websites and external download locations, suggesting an attempt to deliver a secondary payload or redirect users to phishing sites. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

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
  • 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.
  • 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://transfertrolley.cn/d/files/xaxovenof.pdf In PDF document text
    • http://ottotech.center/userfiles/file/dugumusaretelulur.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/ea609fda49d9fe11dc740bddd704f638/28911895787.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c883961d6e---jeveniwutomodibarud.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9609eee93---jomoseretirolitomubib.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/8938885293.pdfIn PDF document text
    • http://nyett.hk/uploads/news/files/80355361693.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608681d403303---83424496267.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/3be21e082ea29bff7ab9d8364d3dba3b/gagepenodiwexomivo.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/149e7e3e44a5144540c4a34a8901f922/kodetonarodafi.pdfIn PDF document text
    • https://emmaushuis.org/pages/daniwavo.pdfIn PDF document text
    • https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/19857b66f0a229651127ff17f0863a65/sukodawer.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160904ff0da6f7---77231373408.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16073365457b3d---fipufexukumenibizulexukug.pdfIn PDF document text
    • https://immo-cjeanpaul.lu/userfiles/files/73601436518.pdfIn PDF document text
    • http://bbpcosmetics.com/admin/upFiles/2021-6/file/rabovesimetubojuluwawivir.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/v6g6rc0dimq7netlfphfg3amou/zupabipipubigijamizani.pdfIn PDF document text
    • https://www.hemoroidklinigi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a24e93767---zijizonidulidusisexoxawe.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/1607a10ce26092---20964485066.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/zazixezivajanaf.pdfIn PDF document text
    • http://desagresbrts.com/clients/34568/File/rewemefipog.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/5k26ole3rgkui7vs3k07ebvh3j/69845170873.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=things+i+wish+i+knew+before+i+got+married+pdf+downloadPDF 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_off00039286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39286 18724 bytes
SHA-256: 5e5531ff33f9f952d98669a5d53cb2d0523fee6a16266404f467054333a53f45
font_01_sfnt_off0003c353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C353 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0003db6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DB6A 11224 bytes
SHA-256: 98d8c3e3721b6bbd81d1c4613790515f188bac0df0aa310a4c107b1c92dcf825