Malicious PDF — malware analysis report

Static analysis result for SHA-256 53579095e0486703…

MALICIOUS

PDF

81.8 KB Created: 2021-04-25 12:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e2029e876e65616a7eb7f25a6d1cde5f SHA-1: 100e72771fd19c7435a9e6d38042b4ab5c60cd3d SHA-256: 53579095e0486703c0361e342b86974c0b821d8859064658f802b0bc9b15b5ad
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/strik?utm_term=meteor+2020+nasa PDF link annotation
    • http://jogubewuzamofet.iblogger.org/self_adhesive_labels_21_per_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_6033a825911d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450138/normal_600dfa05b254f.pdfIn PDF document text
    • http://waxenotesanil.22web.org/bounty_killer_2013_full_movie.pdfIn PDF document text
    • http://pubguckazan.com/molikerixutuwedamenefila4pxs7.pdfIn PDF document text
    • http://jegajini.iblogger.org/16397494663.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393190/normal_600b8d0d7aa70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484359/normal_603dedfb8c319.pdfIn PDF document text
    • http://dufogawimut.iblogger.org/harlequins_40k_codex.pdfIn PDF document text
    • http://idealslim-italiaofficial.site/pexufemixelhhl7q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456119/normal_600bc93b7379a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bbf05351-1c49-455c-8ea8-df349977a4d5.filesusr.com/ugd/15c6d6_88889fb442084ca7bc8ce608cc68de9d.pdf?index=trueIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/32707440501.pdfIn PDF document text
    • https://3a5aa097-47f9-475f-9992-83bceef25cc3.filesusr.com/ugd/f55bec_e1f14123ffcc4ac2bfa25de402932bde.pdf?index=trueIn PDF document text
    • http://lorabedujeweb.epizy.com/icse_full_form_school.pdfIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_4a7a65e0b0c94c45af038f3a3d3311ed.pdf?index=trueIn PDF document text
    • http://zowofiz.myartsonline.com/86395607184.pdfIn PDF document text
    • http://jumawivowibeb.onlinewebshop.net/solafelimezawu.pdfIn PDF document text
    • http://nomekerileme.epizy.com/6252153835.pdfIn PDF document text
    • https://2d2b1dae-c014-4902-97e6-c3f1d56915cd.filesusr.com/ugd/70e5f7_a6a1ffe2b7614a549fb21f1cb6a4cd9f.pdf?index=trueIn PDF document text
    • https://0e733887-fd72-4d21-8b10-0a39cafbc931.filesusr.com/ugd/1e4d10_b7fac740582943c5b24a4cfe9a1f39ee.pdf?index=trueIn PDF document text
    • http://vutekumini.epizy.com/42498307738.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://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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA5 4924 bytes
SHA-256: 659a900c67e4ccdcfd05afeb789a9a36f06fbb9bfa41ec24f3109f87c5014a1b
font_01_sfnt_off00011074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11074 12052 bytes
SHA-256: 2bfb19bca0abd257e6db79dc271a113bbe6fc042b2cea4385bedfca7d42df75e

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