Malicious PDF — malware analysis report

Static analysis result for SHA-256 0302c1d615f9984d…

MALICIOUS

PDF

84.4 KB Created: 2021-07-14 04:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 31928eec266b82cb6649065b6bea11be SHA-1: f7e0e9783ab36d6ad9f98815897ce8b40755a0e1 SHA-256: 0302c1d615f9984dbe521e7422a4761d9f64d7d97d706a084f1a7fd0b5c099c7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external links, many hosted on compromised or disposable domains, suggesting a phishing or link-farming operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crysiq.ru/uplcv?utm_term=liberty+of+the+seas+grand+suite PDF link annotation
    • https://vicotelecom.vn/static/source/images/file/botomabubozepu.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c69e677ea3---jezenivog.pdfIn PDF document text
    • https://ilcaminodaugo.it/file/xixujekanoburemu.pdfIn PDF document text
    • http://xn--e42bt3l.net/upfile/files/72105202605.pdfIn PDF document text
    • https://questyme.com/userfiles/file/rewewefowusowijagozid.pdfIn PDF document text
    • http://kingsauto-bar.com/js/upload/files/70745810288.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd01a2ef4c4---16047878851.pdfIn PDF document text
    • http://zlato-stribro-investice.com/upload/files/22791143042.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/2e495938d9a092b2cf82b7f03feb574b/loxagorodazif.pdfIn PDF document text
    • http://poorclarescork.ie/images/7031496361.pdfIn PDF document text
    • https://matrainagycsalados.hu/userfiles/file/duxitelerixurozinam.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/696373963f6a7c6f46ad55acf33fc0cc/kakiguvodetozigapizidag.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/rabaw.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/3fed054da7281d80db2d85c9305f905f/panunabufolemeb.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/tezazatazitaliwotu.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/paraneka.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/23375383366.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16086049b89e52---xosuruwusageke.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16074399d12243---78544334921.pdfIn PDF document text
    • http://carszana.com/image/upload/File/873718736.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/b67ba47f053d28e59126d023f5993929/lojutune.pdfIn PDF document text
    • http://zovsh.com/Uploadfiles/files/vetafazokezemudumeporazav.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/92482efa0ba15aa2541af05327104e56/59186537588.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/039v1oc69o9a67nelm6kefn135/59008688531.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608212ce4b0d0---75587126930.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_off0000e49e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49E 10900 bytes
SHA-256: 62fe7c3e788998e318750ac19c8c176116b4f72b36c098762b4ef6ded74c2a57
font_01_sfnt_off0000fda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000115b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B2 18556 bytes
SHA-256: c2f6474667ae148af4a7d87ac0ca18a140f71f4762ad11f21c853d1839240906

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