Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c180617fa8c612a…

MALICIOUS

PDF

91.2 KB Created: 2021-09-04 20:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 9b6fd93ea77683eb88c9eb9aca1e8ad5 SHA-1: 922f2a4daf097f8b9f9958410cc46b71c37bee77 SHA-256: 4c180617fa8c612a0ee67f3806594f08bdbce5721372d1e6b504b1bacc80ab07
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains numerous links pointing to compromised CMS upload storage and disposable hosting, suggesting a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and link farm indicate an attempt to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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 http://kapalishakti.com/ckfinder/userfiles/files/43206360268.pdf In PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160eda40539490---18274821523.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1611d1184b4a9d---kivex.pdfIn PDF document text
    • http://maginsaatmetal.com/resimlerfiles/88950729481.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608549ff1a022---posepivo.pdfIn PDF document text
    • http://akcihlar.cz/userfiles/file/58121163816.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d50b6232a6a---2134776883.pdfIn PDF document text
    • http://louisamerino.com/userfiles/file/63546711494.pdfIn PDF document text
    • https://pindimana.in/uploads/file/libovupuxuwosej.pdfIn PDF document text
    • http://seoulmenu.com/uploads/files/rikil.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d23c48711a0---48864182950.pdfIn PDF document text
    • https://avayemehr-carpet.ir/data/file/22793804281.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/161257cd0f0b6b---kulemuxo.pdfIn PDF document text
    • https://irisapp.cn/uploadfiles/fckeditor/20210710/file/16258650596843.pdfIn PDF document text
    • http://ligneus.hu/upload/file/84313203410.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef55eb5c20---47446571951.pdfIn PDF document text
    • http://imapbook.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/95279731589.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/c5b157bdae5052ab6ea158af1005e78d/rarajowozow.pdfIn PDF document text
    • http://gsemilia.it/userfiles/files/92156937876.pdfIn PDF document text
    • http://markasib.ru/ckfinder/userfiles/files/17733451907.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/32vevdkavfm029m0ca1v8olvj2/7746009885.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161284adf2c7cc---gajunamakosipagu.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3dcf80c76---6670512397.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16087285fa6d64---76058279429.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=trend+trading+for+a+living+thomas+carr+pdfPDF 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_off0000f6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D8 20372 bytes
SHA-256: 8b96c8b4c3a7f646ebc7b786f7c0d4ab714ff5346f20de01bafa8a239c230323
font_01_sfnt_off00012d13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D13 11096 bytes
SHA-256: f7afd881aabf84e72b92df1906267929a132b63c82560335771e934e0ecb5dd0
font_02_sfnt_off0001468f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1468F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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