Malicious PDF — malware analysis report

Static analysis result for SHA-256 68244c9de3e5cb8e…

MALICIOUS

PDF

117.3 KB Created: 2021-06-26 03:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: dff4ba67d349f4e124d77bd0b4bd58c1 SHA-1: 07b7a6d09d4f2d4b37177ce96ee08544ba00577a SHA-256: 68244c9de3e5cb8e826a56d7bd4278697862ab48f2c2b4af7e253f68cb0962e5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many of which point to compromised WordPress sites and other disposable hosting, indicating a link farm designed to lead users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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 http://smartwealthhk.com/userfiles/41494248559.pdf In PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/f7ba723d1afe549a30308aebb0fbd315/95472708906.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/34f37fad780ba90689ccbb5e666d2417/62421534646.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/ea310d6c6f932eeaa287f646933d002c/zemadovivejutiwiderofuke.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160abd1d845acd---tutowutidufagononoreg.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070646ab29da---rodadasulel.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d40eda61f1b---42895397691.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160707e0a1983d---87741273209.pdfIn PDF document text
    • http://dafangtour.com/fckeditor/userimages/file/bumizoketibomugosu.pdfIn PDF document text
    • http://chemonova.com/FCKeditor/file/27772571267.pdfIn PDF document text
    • https://meganimal.pt/site/upload/file/wegekululo.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/fb645d948eeb59a4bc23c649b15e5904/64461594595.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf58020190---97022109356.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b1ad000acc4---latejazesevakebosaluw.pdfIn PDF document text
    • http://lnshiyue.com/userfiles/file/20210620035053_2077235479.pdfIn PDF document text
    • http://distributoram.com/files/file/33734231436.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160748f3998965---tasopibatij.pdfIn PDF document text
    • https://rugsinc.in/UserFiles/files/padujigogebijarelisaduw.pdfIn PDF document text
    • http://emannsltd.com/userfiles/xuwewowamijezedofunaga.pdfIn PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c88d643c3b---66557945846.pdfIn PDF document text
    • http://syuncyoku.jp/upload/file/lizadawesa.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/53842650719.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=pooh%27s+most+grand+adventurePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BA1 17208 bytes
SHA-256: 1d54b3679ecfbb0cfd3afa94126ea759ac2a434495898d3bca4eb32173632993
font_01_sfnt_off0001783d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1783D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19054 10756 bytes
SHA-256: db92acbf4c6fdc0a419c4b778964bfedda400a3943de6d02925f4efa67875e79
font_03_sfnt_off0001a8ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8CA 18776 bytes
SHA-256: 878a93ce5e404f317a0413cce4c14047643dbc05eaf8209c5943324537b0d638

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