Malicious PDF — malware analysis report

Static analysis result for SHA-256 fedf0fc01dc31772…

MALICIOUS

PDF

78.7 KB Created: 2021-09-18 14:35:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1a0f4d44bb43df876c720477c1f7b64c SHA-1: 0f9cd1e4c77e6e180c5c05d4925f9688d7aeb465 SHA-256: fedf0fc01dc317727e63bc036df8b5c8c9e30b569403cded1a7ed0fdd32910f6
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to compromised websites and link farms, suggesting a phishing or malware distribution scheme. The presence of 'utm_term' parameters in some URLs indicates an attempt to track user engagement with lures like 'pdf to xlsm converter online free'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://archism.ru/uplcv?utm_term=pdf+to+xlsm+converter+online+free PDF link annotation
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161358bc21101c---pozipulopuwuf.pdfIn PDF document text
    • https://kaptenhoki.com/contents/files/5173456866.pdfIn PDF document text
    • https://coimbatorepressclub.com/FCKeditor/userfiles/file/98581978617.pdfIn PDF document text
    • http://twgo8.com/uploads/base/files/202109112209149479.pdfIn PDF document text
    • http://architettodrabeni.it/userfiles/files/5775654316.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161315bd51e867---dupulimuvexogezixed.pdfIn PDF document text
    • http://alles-vom-schreiner.de/userfiles/file/rojezazig.pdfIn PDF document text
    • http://pandoraecza.com/genelresimler/file/73334953360.pdfIn PDF document text
    • http://www.elstar.ru/uploads/files/90853856320.pdfIn PDF document text
    • http://stepasidemedical.com/images/uploads/file/maguwonuxirejusanuvuzosad.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613db97501865---73951217579.pdfIn PDF document text
    • http://metrominicabs.com/survey/userfiles/files/18186709039.pdfIn PDF document text
    • https://technoarc.net/userfiles/file/xamatavoxinijez.pdfIn PDF document text
    • https://aspart.ro/ckfinder/userfiles/files/jabazerurawo.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/36900c5d48e0bbdfb8294df4b020afa1/82046606927.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/46db2ed3fdd9413d73d76e10bfb3af23/94797029705.pdfIn PDF document text
    • http://xn--hazrdner-r4a10d.com/alisveris/yollanan_resimler/file/dutixafazarafemoja.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1613a5f9ad1f4d---gegosonubuwubixifotef.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/161429dcb27f0f---laxuwisidafaxol.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613977d513ef4---14440062218.pdfIn PDF document text
    • http://riccaassociati.eu/userfiles/files/56613756964.pdfIn PDF document text
    • http://exim5.hu/_user/file/pajogefedifakasu.pdfIn PDF document text
    • https://theloneranger.tv/clients/loneranger/ckfinder/userfiles/files/xubuje.pdfIn PDF document text
    • https://sbmhavacilik.com/userfiles/file/22310089375.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_off0000d02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02D 16948 bytes
SHA-256: 8a46f76be62170d1302b9057b8c4e7f0b537fc2f2e986835bd7f2887e49754a3
font_01_sfnt_off0000fc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC55 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001146c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146C 10644 bytes
SHA-256: 9f6662df013a7c55daab85b098cd5bc23b4f42071c60486e66927725b07ae34a

Open this report in the interactive analyzer, or submit your own file for analysis.