Malicious PDF — malware analysis report

Static analysis result for SHA-256 f410a9b58ee6ad9c…

MALICIOUS

PDF

88.9 KB Created: 2021-07-01 00:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 14e71eb56baa44cd8f639e6240630770 SHA-1: b445eea50ada098d61399d11e0947357ff64ed1e SHA-256: f410a9b58ee6ad9c6a217dc64c494e8e3b6a7d53053309ed2646444d3e91c0ca
156 Risk Score

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://ketchas.ru/uplcv?utm_term=household+expenditure+meaning PDF link annotation
    • https://actor-conseil.com/files/file/43002123348.pdfIn PDF document text
    • https://decoveinvestment.com/userfiles/file/jadumes.pdfIn PDF document text
    • https://csodamalom.hu/files/files/12117653478.pdfIn PDF document text
    • https://chp-travel.ir/data/file/99535020319.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c30075f1471---37133835570.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a1ffcf242---dajututizefotapiki.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/q4i2dmrj8g4db3raea7edef8nl/fuvibegakobibuxupimun.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160926e2ca3a12---tetupa.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/v8c2gj3km0nlpek5nkbtb8qon9/88584425057.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/topitulolo.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/570cb79f6e738b286e27ffab632b2a44/60676565057.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160756eb3c7456---27359331064.pdfIn PDF document text
    • http://pttaccounting.com/userfiles/files/1898704827.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/desoturubowajimamus.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/6958877824.pdfIn PDF document text
    • http://veivel.com/userfiles/file/zojezovojepisixatusakefi.pdfIn PDF document text
    • http://vonkoenigsmund.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7d46cd5a4---tijomadisabososijubikone.pdfIn PDF document text
    • http://creptiles.dk/userfiles/file/rofene.pdfIn PDF document text
    • https://samoinstitute.mn/uploads/assets/file/45611608182.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/acdb18ef97663be88856829240974344/jobatifumin.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/ad66a8624d2c31184be2e6337b2cad10/23105098357.pdfIn PDF document text
    • https://serwisnawigacji.pl/userfiles/file/44782220468.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_off0000f6ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AE 11032 bytes
SHA-256: 6a366adff872a0065f4967b79555bb1831b04042631f3889667bf542b921bd04
font_01_sfnt_off00010fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FED 17624 bytes
SHA-256: 690034c7168ac9e5abe625c4de97b92a98874972b76cca6ccd69195acd25617a
font_02_sfnt_off00013e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E3B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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