Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d683efd1a064868…

MALICIOUS

PDF

162.1 KB Created: 2021-06-30 16:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 192fc6b78f4f55955fc3876892c66753 SHA-1: ea74293f4511e581cfa1c17b646315d3de1769fe SHA-256: 0d683efd1a064868e7d49a8aa1aaf4e66e58583f3074e1f7fa2d7f116a1a15c1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. The document contains numerous embedded URLs pointing to compromised CMS uploads and disposable hosting, suggesting it functions as a link farm to distribute further malicious content or phish for information. The presence of external URI links and the overall structure indicate an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9511

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=steven+seagal+full+movies+in+english PDF link annotation
    • https://bouwservicewinthagen.nl/userfiles/image/file/77955992722.pdfIn PDF document text
    • http://firewheels.pe/userfiles/file/dedexobumofasaxu.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c03bd1d5b8---nipogejenesodilaziwuzi.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/mj31q7rdd1rtk2vrmetv8k5hvr/kabubatatomezalufebogoz.pdfIn PDF document text
    • http://chinocorporatechallenge.com/clients/6216/File/tupaxiti.pdfIn PDF document text
    • https://roomart.uz/ckfinder/userfiles/files/23385064478.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/gofukomob.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ef4834357---mewisanasuxinabi.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/54266048242.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca15de1d0c0---64947512921.pdfIn PDF document text
    • https://infypos.com/infyposcms/media/2774054392.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/u6as4ku1fnd0cc2hv4oql67a5j/72614443568.pdfIn PDF document text
    • http://flomojapan.com/upload/files/41060071681.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/cea92c23e0e007e67a928c99ca365d81/deperoxugewisotogaxonukim.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a312cd1c327---legexujezavovobarusowag.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c398289a41a---47618407526.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/s8v1p452lfabqg03h3nbml4hn5/18225567242.pdfIn PDF document text
    • http://katheran.com/clients/55933/File/kobimaweredebuzawavutunib.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/da0000d56e5284e4a5926056ac14bf08/dobifodulowiteliki.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2423656d7---xaruvefawem.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/b3fe792ac91af58512526f54869cfc21/64441456754.pdfIn PDF document text
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/166273335f49e003f6f3cbb1e1dea27a/vapujikadazeg.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16082da4352b64---18192279626.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/f3f0f9f29f14a3fe71b1fc3eec607e67/22112418891.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001d5de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D5DE 10800 bytes
SHA-256: 59fd7a190fe4d0be46b78e2d7567b220f9c37d56a7ae98bc7d3c55d2673bc9e6
font_01_sfnt_off0001ee99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EE99 24072 bytes
SHA-256: 80a91c9221aaa7b54b7a83dd481a006a602e73f443d28daa108fa0cffbd43715
font_02_sfnt_off00022741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22741 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00023f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23F4F 10460 bytes
SHA-256: 26781550248232922461ac1b4a31043709b7a24c4b63eeb06278b26393cc68ac
font_04_sfnt_off00025ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25ED5 17112 bytes
SHA-256: 885b9024a80bd539ee88f4c17c1e1fa3cc6dab475ff5b740ebf17c73a317c9ed

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