Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec92cf25f6185ca…

MALICIOUS

PDF

85.6 KB Created: 2021-06-26 05:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7309f8ecb2d5907adbf75305ed492eab SHA-1: 1a90083afc397c62a3ab2666cf082add9e93862f SHA-256: 9ec92cf25f6185caf83b0a04c568d92e10028d161b79667ec244e5dfbbcc8d1a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF sample was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It functions as a link farm, with numerous embedded URLs pointing to compromised websites that host further PDF files. The primary purpose appears to be directing users to malicious content, likely for phishing or malware delivery, aligning with the Spearphishing Attachment technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c722bab2c---73159127382.pdf In PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ab01ae9e64b---35946488337.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/vubewufoduvibugi.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/3268c812382a86979a2f5bfb69b6f5fb/dumoxexubon.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607239c8dc5cf---11415547612.pdfIn PDF document text
    • http://workcoop.org/fckeditor/userimages/file/20210619010338.pdfIn PDF document text
    • https://led7.ru/file/42755393631.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/7kv7k6uc5t0kqfksqlfpfbcbon/nonaxefuvodeduv.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/7a0d0afda31f8ea2248f2afacb8dc7d0/8980421091.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/f68c96217cbe10223f88d72803c9dd27/figitaxakipoguga.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/38033206718.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c1bf2c656---kelevu.pdfIn PDF document text
    • http://france-ex.com/images/blog//file/35252675651.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/de5699a1f985e7d4a5f96574dd9bb9c3/tetaforum.pdfIn PDF document text
    • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/632880ae1ddd5700bd62da63756503e4/73544586709.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c434961831---riwaseniwalofozuvuwe.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/jerolili.pdfIn PDF document text
    • http://nuovojob.com/userfiles/files/15560668801.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/d1f057ad6e6d830c0ebd89886899e340/vanekazuderapol.pdfIn PDF document text
    • http://streathamtaxi.com/survey/userfiles/files/kogavexerarak.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d3abb11ad9---33926216319.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/b834aou0vdctm07kdsga6nfc08/kikakon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=new+river+gorge+fallPDF 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_off0000ecb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000104cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104CC 10148 bytes
SHA-256: 18713630e8ccf8eaeae98a200f3799a281da169fedbb912a02e605907c4930ef
font_02_sfnt_off00011ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA5 17524 bytes
SHA-256: 37675309a7f5dac308c7d22e1c19e86d86b7ec53b4831cf7887b42d6a4c9d074

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