Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e0f8fe950e8fb62…

MALICIOUS

PDF

71.3 KB Created: 2021-09-20 01:02:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: a5071486f943cb1f0bb8422246ba5e18 SHA-1: cd508ab532741eacd779ed1737dce551302e8a5b SHA-256: 0e0f8fe950e8fb6295fb86f8fc65e94a9d1ef161ca06686534b3a9cc90b496e4
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs that point to various domains, many of which are identified as link farms on disposable hosting or compromised CMS uploads. The primary function appears to be directing users to potentially malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://euskararenginkana.eus/files/galeria/files/tilomagovefopixamin.pdf In PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/66403296383.pdfIn PDF document text
    • http://thekitchendesignstudio.org/uploads/files/76019396716.pdfIn PDF document text
    • http://ckrestaurantgroup.com/ckfinder/userfiles/files/ramobijugifotaruvefubi.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/vufogarazowifugabotorep.pdfIn PDF document text
    • http://vansuloi.com/uploads/userfiles/file/fawikinofak.pdfIn PDF document text
    • http://humanlitech.com/files/files/2262435610.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c03cce61ca---fevojopefa.pdfIn PDF document text
    • http://studioaeditecne.it/userfiles/file/42448258757.pdfIn PDF document text
    • https://chp-travel.ir/data/file/86855061804.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/d7c3a3d423545df4215a14c36d1c9090/18961326066.pdfIn PDF document text
    • http://leasingtowers.com/ckfinder/userfiles/files/kibuzuburi.pdfIn PDF document text
    • http://elijasprojekts.lv/files/file/pavemu.pdfIn PDF document text
    • http://getwealthythisyear.com/ckfinder/userfiles/files/gejawimezewivofubedez.pdfIn PDF document text
    • http://lustigersteirer.at/userfiles/file/54929420012.pdfIn PDF document text
    • http://prosquash.by/data/13257427548.pdfIn PDF document text
    • http://meuble-tunisie.com/userfiles/file/bokukobanape.pdfIn PDF document text
    • http://rimini-portal.de/bilderarchiv/file/rusojodumonuxibaboni.pdfIn PDF document text
    • http://darec.sk/files/files/tenojejugodorutimedig.pdfIn PDF document text
    • https://havadisname.com/upload/ckfinder/files/sifigiteref.pdfIn PDF document text
    • http://slesnick.net/userfiles/files/jarelibek.pdfIn PDF document text
    • https://anbuadidravidarmatrimony.com/ckfinder/userfiles/files/43307300553.pdfIn PDF document text
    • https://km2804.com/ckupload/files/tobasumigemijujotumotuzi.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a270fb2155---bodipogazokozelabile.pdfIn PDF document text
    • https://speak82.com/_UploadFile/Images/file/xiremomexab.pdfIn PDF document text
    • http://www.guus.edu.mn/ckfinder/userfiles/files/gojomibenobazupexejuw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=kilometers+and+kilometers+english+subtitles+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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB50A 16008 bytes
SHA-256: 1ed48731c034b740cb0987463f2602c12bbe0e816aff937484186e072dcc9ba4
font_01_sfnt_off0000ddf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF607 11104 bytes
SHA-256: fad6f40206cd64d29ad1de4a1900e833d2cbf98953fd98ec3520844ecbf60d09

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