Malicious PDF — malware analysis report

Static analysis result for SHA-256 46371150712bf879…

MALICIOUS

PDF

84.8 KB Created: 2021-06-09 06:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a79b87292528954db318039433bec3d4 SHA-1: 45399ac13d9e5c839428f6ad37ac684a3a278fc1 SHA-256: 46371150712bf87995a1e4d3cf7f71278023e5a8314609bbdf8656713ae90909
156 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML and ClamAV, and exhibits characteristics of a phishing lure. It contains a link farm pointing to compromised WordPress sites and disposable domains, likely intended to trick users into downloading malware disguised as a "free fire hack version". No scripts were extracted, but the presence of external links and the phishing lure suggest an attempt to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8786

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://huntic.ru/uplcv?utm_term=free+fire+hack+version+download+link PDF link annotation
    • http://aldara-latinoamerica.com/userfiles/file/54319260354.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ae6545957---70467299161.pdfIn PDF document text
    • http://saovietgroup.com/upload/FCK/file/zerorilore.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160773587576ff---77790087565.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/31a80e9ac1cf40c387e4f7c2dbb94f96/biwubipowogeb.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/crrtbj3dkrdo1lbv8jq00mtvn9/mefad.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/clvp5dtgka03tu2kpm7eum6t51/98688094431.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c935437c41---17265285758.pdfIn PDF document text
    • https://hgb.se/filer/file/32775689763.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/68582052908.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/o88qo4nq8his1unqbktt38p1up/xolubugesigumaromazumije.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0b64baaf9---gotibu.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/r3eq2h9a42aamjm4vme8trlr73/39791501465.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/c8421f3f1247fe0402edb839a0be442b/musudolasifavase.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/7923964376.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://scripts.sil.org/OFLIn 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_off0000fc88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC88 4988 bytes
SHA-256: 61470f53b79d84f2ee213fd2e0332f78510af784b00b291eea23e8a03ce3fe1c
font_01_sfnt_off00010d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D7F 25036 bytes
SHA-256: e37dc4a9d80fd14f9de2b7031b90d336912f8ef9b56762d867d0710847fe1cd4
font_02_sfnt_off00014427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14427 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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