Malicious PDF — malware analysis report

Static analysis result for SHA-256 d62709ee5c2ae445…

MALICIOUS

PDF

116.6 KB Created: 2021-03-30 22:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53c241e311d345b8ddf5a87c862ff4a6 SHA-1: 9f1255265a0dfec60bdcee8ad9eb79dfca7ae88c SHA-256: d62709ee5c2ae445f652d76cce8f2399cb1ed8f96a507a37515e0759ecdc30fe
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier with high confidence. It contains a large number of external links, including one to 'dugedepap.ru', suggesting a link farm or phishing attempt. The PDF structure and embedded links indicate it's designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=tipos+de+mitologia
    • https://mokoluwi.weebly.com/uploads/1/3/4/5/134595511/2891507.pdf
    • https://rurikuzusobow.weebly.com/uploads/1/3/4/8/134879219/bazeruramijomopo.pdf
    • https://golotarati.weebly.com/uploads/1/3/1/8/131856611/8a48da75.pdf
    • http://wemorewabadeluz.mygamesonline.org/biogeography_book.pdf
    • https://gomosonu.weebly.com/uploads/1/3/2/7/132712120/9708a27516e8.pdf
    • http://vuwimoxit.mygamesonline.org/3128422336.pdf
    • https://levavago.weebly.com/uploads/1/3/5/3/135343263/4e2ea075.pdf
    • https://giwuvapelefawi.weebly.com/uploads/1/3/4/8/134869604/noxakiximaz_dexapatok_zaxopazujoxafil.pdf
    • https://lomameleni.weebly.com/uploads/1/3/4/5/134597964/b2c3bbab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_1a116f37b0aa494886df709712405ba9.pdf?index=true
    • https://s3.amazonaws.com/tasufagijaremo/vijisolomuxigaf.pdf
    • https://4ef57e19-9a2e-4e6f-a444-f6b59f982a39.filesusr.com/ugd/4c1554_d7d22586504140e683e8015f8f1859c1.pdf?index=true
    • https://s3.amazonaws.com/ninasivol/misery_movie_explained.pdf
    • https://s3.amazonaws.com/kiguteperilodu/dawetofuliretatizilobevu.pdf
    • https://s3.amazonaws.com/wujapu/tiriseko.pdf
    • https://s3.amazonaws.com/xugigabitulu/black_and_decker_mouse_sander_ms550g_manual.pdf
    • https://08b4a39d-fa16-4eaa-91be-ae90003cacb9.filesusr.com/ugd/237bf7_2cae687e15e34e2a8747f3eff3da6ed8.pdf?index=true
    • https://s3.amazonaws.com/varolexexus/queen_comforter_sets_with_sheets.pdf
    • https://6cf80756-66c2-4d2e-b15d-ff1677cb7115.filesusr.com/ugd/2257e8_5f5cfad1bb8e4e529b6478699453a687.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018a96.bin
de581326cd17849fe46e82c159bec87ec00174a48ed562a29f93ede2dd1db604		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18A96 5132 bytes
font_01_sfnt_off00019bfb.bin
84af1907e49e9f86a9e34196f958e8e1a20af705b01890724f5e25fd787dba30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19BFB 12580 bytes

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