Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a057e5f44e9992…

MALICIOUS

PDF

83.8 KB Created: 2021-07-02 03:31:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ab45f87dd1c28bd8266f06fcaa1db333 SHA-1: 707d549e7117ac50206cb92c287e8d9371948b14 SHA-256: 01a057e5f44e9992cb4f3b70800f672aefc1b86564037979d87ab23d462b2f39
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to disposable hosting and compromised CMS uploads, indicative of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://siltherm.com/ckfinder/userfiles/files/80852848911.pdf In PDF document text
    • http://allasclub.com/campannas/file/kegimufugubixiwedusaba.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eaa96d9a91---30544614622.pdfIn PDF document text
    • http://aptchasers.com/FCKeditor/userfiles/file/8332066613.pdfIn PDF document text
    • http://mrsinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/rukederagejopaxanekunafud.pdfIn PDF document text
    • https://praward.tw/wp-content/plugins/super-forms/uploads/php/files/d1324925e277c2faab038a296b5f7023/mobevup.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///loxaxedugotalazof.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8659c34ad7---zekujanu.pdfIn PDF document text
    • http://www.bash.cl/media/file/25082594330.pdfIn PDF document text
    • http://normel.org/files/upload/file/xofunolimisa.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608648bc46a91---29515238697.pdfIn PDF document text
    • https://drivetripper.com/userfiles2020/files/22296582181.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/96412631062.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f62ec232c4---safonebupepaw.pdfIn PDF document text
    • http://mvclassof1990.com/clients/8/8c/8ca0ba2c7a07c5cd1f21f9fc323c16c5/File/xonidadosoginatepejewu.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/7043459dc4e9884e86c75761ccc50a00/11661719211.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/1bd258a4831131d36457e49d68f920bf/dozozamotedogeratajuno.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/sesezitasipeturizamesivu.pdfIn PDF document text
    • http://minerva-collection.net/files/files/49524611695.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab3139b7fe---vesezotawefaduduw.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/33a156b9872370684e6319480b4a14c5/subevixinuwumuf.pdfIn PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7a463e829---54520182949.pdfIn PDF document text
    • http://abwferrellpkwy.com/uploads/files/jorulifepemitusatuda.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/b640649e01c4fb98676f33085223bcca/pejapemogapajusedofidowe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=combining+pdf+and+jpgPDF 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_off0000e64c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64C 16876 bytes
SHA-256: daee0f7d6778d9f9cd7b9383990f7b4104fb608fbf20944759a44793632bf622
font_01_sfnt_off00011258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11258 10600 bytes
SHA-256: 54fd3782b78c53d62a8938a7eed2be5120e3d6c493c3d2aa6804337936e07679
font_02_sfnt_off00012a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A06 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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