Malicious PDF — malware analysis report

Static analysis result for SHA-256 475279f30e5ad891…

MALICIOUS

PDF

86.8 KB Created: 2021-09-15 17:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 1466adec15d10cd1baf44b2512092777 SHA-1: 8b4767b767c5de4f6fc0049b602aa778a65a755e SHA-256: 475279f30e5ad891d6666740d52f1f4ee549c286757fbbce77d4dc69a0baf57c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 https://synerhu.ru/uplcv?utm_term=bluetooth+adapter+android+example PDF link annotation
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f19b87b5ba---83165142917.pdfIn PDF document text
    • http://businessvaluationapp.com/fck_files/file/bonase.pdfIn PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/9513744188.pdfIn PDF document text
    • https://sukienmiennam.com/userupload/files/taket.pdfIn PDF document text
    • http://vasset.bg/userfiles/file/16072244176.pdfIn PDF document text
    • http://xn--djr00fsyfv0o5qgy9u.com/filespath/files/20210914183137.pdfIn PDF document text
    • http://prinsart.ro/uploads/files/68688572225.pdfIn PDF document text
    • http://www.hussco-steel.com/husscofiles/files/vegomubavota.pdfIn PDF document text
    • http://homelife-superstars.com/image/files/nipajomazibiwofokajimuf.pdfIn PDF document text
    • http://farmaciafici.com/userfiles/files/noderi.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1613bf6a96dad8---52101864785.pdfIn PDF document text
    • http://wccflooring.com/userfiles/files/xidoxazadowefopifunem.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/vegasudivodija.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/5733928600.pdfIn PDF document text
    • http://vibrobreaker.com/files/files/gevubamupuroxatog.pdfIn PDF document text
    • http://hausdergesundheit.net/userfiles/files/25469699486.pdfIn PDF document text
    • https://hanyauntuktesting.com/contents/files/68705181272.pdfIn PDF document text
    • http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/39138661837.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe717e7edf---6502565141.pdfIn PDF document text
    • https://implantsdentairesdesmoulins.com/upload/editor/file/23176157966.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613eb4bd3e0eb---53677487084.pdfIn PDF document text
    • http://dolinakrzeptowa.pl/public/upload/ckfinder/userfiles/files/jejetarimowa.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133000454c8b---3566102147.pdfIn PDF document text
    • http://yousefmaktabi.com/ckfinder/userfiles/files/wuvebup.pdfIn PDF document text
    • http://sushistoryus.com/uploads/files/44768099311.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

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_off0000ecaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAF 10744 bytes
SHA-256: 2bb26fceb772dd0de92fe64ef46e8de38445f5360c00c0a287a1a86ac6572deb
font_01_sfnt_off00010531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10531 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D43 18696 bytes
SHA-256: 06265b6f0cfcbce07927c642e9c847986c874f3f0719182cf50b0bc8b1c18dec

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