Malicious PDF — malware analysis report

Static analysis result for SHA-256 497faf100fae1b74…

MALICIOUS

PDF

98.0 KB Created: 2021-08-09 07:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7cdf110421bbcacc4481aad847eede32 SHA-1: 76d3369e4cf7f1317a8da5086d60c6b7af8b43c2 SHA-256: 497faf100fae1b740030b6d54fb49bd0d811f2efee9ec10b74899920ff729f1e
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and disposable hosting, likely serving as a link farm for phishing or malware distribution. The presence of embedded URIs and the nature of the links suggest an attempt to redirect users to malicious content, potentially leveraging a PDF exploit or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://pistant.ru/uplcv?utm_term=como+descargar+zootopia+pelicula+completa+en+espa%C3%B1ol+latino PDF link annotation
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087fa357f588---36136370137.pdfIn PDF document text
    • http://marathon-gexin.com/Uploadfiles/files/5588087875.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607b819576b33---kujaxuvobadujarimenunu.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/xewenemilujokirufumunan.pdfIn PDF document text
    • http://hanasushipickup.com/uploads/files/15294128939.pdfIn PDF document text
    • https://egyiksem.hu/uploads/file/kiguwin.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/85826290027.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/72044c95deba104968a9d43f3df8ec86/38179461102.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd89660ebd---29502581903.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/vazabawamipixoler.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/pnt559lpklj15dhv2pjeepg9t3/xisinibuxivopubofobozab.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/4bf3g1ordjn94clf7oq60t4ivf/poxobiwifen.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/ac1167a1dc6a8cb4370e18880a2c6ee7/27735376780.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1607a240266042---585796478.pdfPDF link annotation
    • https://www.myosiaffiliate.com/199trust/img/file/vubonosarisegimipewebigel.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/35046ccf3c883895e5c75c5264c54dde/daxukusujobituteb.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16198663331934.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f7b814e511---nimajusufolomewuvafud.pdfIn PDF document text
    • http://solee.cn/ckfinder/userfiles/files/semodizadewazebizivi.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/e505fc60750cc78f265bd23f1da227ee/22128479852.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/naxikusinoguxiv.pdfIn PDF document text
    • http://reclameindex.nl/images/uploads/kimebivuviwuz.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/ff339722b50124cdfd1edf7c1af8ffa6/56218543957.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/4258c8dcakk3pao171lqc4lsr5/korokoxo.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/59d231a6c1395deab22fdee97a363aff/42221599407.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c73e386758---gepixarixuje.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_off0001155f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1155F 11256 bytes
SHA-256: 9cafb5dbb086860b5ba0cecc6071b503be9c7e79ccd2f9aeb41071fb9d873f11
font_01_sfnt_off00012f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F5B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001476d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1476D 18384 bytes
SHA-256: da473fcfbfa5231e1a8f79ea132a142a87f3b54861c5e1c5967188b15c25e8d9

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