Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea272416bc4a2ff…

MALICIOUS

PDF

88.4 KB Created: 2021-06-26 11:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4fc39b78aad679fbe398636d1478ee10 SHA-1: d9988a0f9152d35e2b8d7d93df75ab34eff46e4c SHA-256: 7ea272416bc4a2ff8bcca2a33607041fbf7e46ddfebdb854ee26f8310aa3118e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to potentially compromised websites or disposable hosting, likely intended to lure users to phishing sites or download further malware. The presence of external URIs and link farm heuristics strongly suggests a malicious document delivery mechanism.

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://wastran.ru/uplcv?utm_term=causes+for+erectile+dysfunction+in+30s PDF link annotation
    • http://liyangah.com/Upload/file/70795275083.pdfIn PDF document text
    • http://bielwod.com/userfiles/file/bevitopewiviri.pdfIn PDF document text
    • http://jarosi.hu/files/file/witijetaxojepedax.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/eco82krq037nji2e618ftt0ka1/14767228849.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1608421ba86012---34046303636.pdfIn PDF document text
    • https://ntwbearing.com/UserFiles/File/divadeguwekix.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/05a231e81b531651ec3567a97ec1cfdb/65212023118.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/fubokes.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607514f487483---jinuwunefolegidozofagoji.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b330f81c210---jonikadixalabeze.pdfIn PDF document text
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4d938c4e9---vufopalobavu.pdfIn PDF document text
    • https://secolink.sk/userfiles/file/tevese.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16092e81acb7c8---12368856253.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2d6efc5fb7---67852681113.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a740b89d846---luxokixe.pdfIn PDF document text
    • https://callmarkinvestments.com/callmark/files/xifidepisokovegalad.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd2afdc835e---88675381294.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0f9d5f9fb---89365446357.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160911dfaf22e3---35854762575.pdfIn PDF document text
    • http://www.saito-ken.jp/userdata/file/27987288860.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/170541502748.pdfIn PDF document text
    • http://porpora.biz/imagenes/imagenes_contenidos///36178520333.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_off0000f7d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D3 16416 bytes
SHA-256: 574beab25a482eaa77c4fd1090ce0fdbe9b987895754b6e21a089cc702898895
font_01_sfnt_off00012265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12265 11008 bytes
SHA-256: c1f5c7ffc1c97150b809fbd2d61b5325cc4c43e39614e2b35441ee7efa85a88f
font_02_sfnt_off00013c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C2F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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