Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1140e58cfe9d24…

MALICIOUS

PDF

106.5 KB Created: 2021-06-26 16:24:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 1908f8eeb6e8bdf78309c32541730b38 SHA-1: c89bdb4de634c922e87c9f4b82be4e85135ed301 SHA-256: be1140e58cfe9d2448831b306c228a6a60f1e4b35445b83a1d507c6342aa6c01
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to distribute further malicious content. The presence of multiple external URIs and a link farm heuristic indicates a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16083caf1460b2---65522376045.pdf In PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/c052474ba529e8c398123cde15698a8c/47662997379.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab65218c803---tavoxutilojitot.pdfIn PDF document text
    • http://aimic.com/userfiles/file/4795907776.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/kh85ounp7nakpp8j9qen8bqnqm/rofivasejad.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/b809cf2a0efcb48831030b492294a34f/gaxarejomezatiziwivepe.pdfIn PDF document text
    • http://capital96.com/userfiles/file/simibewujor.pdfIn PDF document text
    • http://savvyais.com/userfiles/file/40152153746.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/b0c5bff613e7ea7f0753ae9bf077f917/zaparidapon.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4ebda4091---53869765254.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/21f8b6f9742ed9c68241f85a8986dd74/96352746504.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/f55f4217f6aa097c0baaf3ae87b5d290/51449902001.pdfIn PDF document text
    • http://vetranhtuong.info/luutru/files/xuguvugoremodipir.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/mgtu14oq02anlachv0uhemv4lm/29528848678.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/ea690bbd85d2bdc5a617f0a226716b5a/veramelawezuxajezanopij.pdfIn PDF document text
    • http://lubrifianti-auto.ro/files/file/4445851365.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/79273076828.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/32594850625.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090f839764d9---devinaweniwenofufiwexobe.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160bf5bdb385b8---niforuporufevibenikedi.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dafd71aed3---woragewiwomulufuzekuzim.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/j96svl5gmjcir6jbo4d80vbu48/84928913730.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0npsrl8kkvsuknprl33ll51dc4/66975130902.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160a87d7ec2f3e---58034053782.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086eb1cd1dc9---63961438588.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=a+torch+against+the+night+pdf+free+downloadPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DA6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000155b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155B8 17348 bytes
SHA-256: 52158388514ffcc38f1f7ef70434de35edb654b9a4a129498fb2410e52a17bb9
font_02_sfnt_off00018308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18308 10964 bytes
SHA-256: 5a21c7092ce9ab74c7b2cca8f5c7183b20793a0909c5f27239135fefd62d5d37

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