Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cac59eca8d7a594…

MALICIOUS

PDF

89.4 KB Created: 2021-06-27 05:48:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 1e9f9af801f9d326f8c67f2d1e194df1 SHA-1: df5ed79ecbe4a8a7c5e6578eeb4811bfab7bebc5 SHA-256: 7cac59eca8d7a594d1c6547845987a299b2b15887e1c17016009bd677ce04265
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan distribution vehicle. It contains numerous links pointing to compromised websites and disposable hosting, suggesting it's designed to redirect users to malicious content. The presence of external URI and link farm indicators further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • 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.
  • 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://abwingscolley.com/uploads/files/7760842025.pdf In PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4b608c4bb2---40819728246.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/9d77285baf0953c71220ba627bab0b9c/woxoponapopimulimorasumi.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160733f7bdbb5a---9988865379.pdfIn PDF document text
    • https://fcr-fomentoconsumoerenda.com/uploads/files/ludibol.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/tomq27rdu2967j5si2jrnjh4mt/85910308335.pdfIn PDF document text
    • http://zonweringbelgie.nl/ckfinder/userfiles/files/varejug.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/80d520b736e46f8ab5c38a705ffe5f78/84587256458.pdfIn PDF document text
    • http://ebiocell.com/uploadfile/file///2021051802413414.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf3652d135---lolasesonivagibeb.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/jibalaferujujopubixap.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160827917a7903---xijuxewoxok.pdfIn PDF document text
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/0d7938d18590f7a9ef0d0ceae48bfdf3/lividufomaxizowofulaja.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/jatuzogitumubavozid.pdfIn PDF document text
    • http://www.gesas.it/media/mailinglist/file/87034469372.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/2de5045738b880e1c5dbd9565e05a1b3/bovofatefenakuwusemadowu.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa7d142b05---44165226368.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072155054f0d---xegexezutogeb.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d63784f775---gegalogukanaj.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/wigugidosetexivuwi.pdfIn PDF document text
    • http://fsgpj.com/upfolder/e/files/20210621151742.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2f617374e371b757cf38cafea2278044/gudeburiru.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=mood+cheering+quotesPDF 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_off0000fdc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC9 10680 bytes
SHA-256: 62615301d4feccf1a37bf74127e587b2e6f5503423ef194df18ee25940787f86
font_01_sfnt_off000115ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AE 16644 bytes
SHA-256: 988819bc21b5a155d27f96e05108e622efe210b0f986e936314bda258292cd74
font_02_sfnt_off0001408f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1408F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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