Malicious PDF — malware analysis report

Static analysis result for SHA-256 e039da5701292914…

MALICIOUS

PDF

75.7 KB Created: 2021-03-12 13:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fd557039908653186fc66a45d71d3546 SHA-1: 13edbe260db5065af0b1f4631c3aa0725b1b9dd7 SHA-256: e039da570129291448002f8359fdafbd14ca21b05c732c6383d404d5a281186e
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains metadata related to PDF generation and a keyword that aligns with the embedded URLs, reinforcing the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=how+to+use+rainbow+pigment+mhw PDF link annotation
    • http://tupakewufitid.iblogger.org/bakojorulapemawudon.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/jhQoiaS/party_hard_go_unlock_katie.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/hGIjaAj/battlestrike_force_of_resistance_ocean_of_games.pdfIn PDF document text
    • https://cdn.sqhk.co/xapawavuma/i67Cygc/19204742299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498893/normal_60325f01c4b7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448743/normal_60163ecaddc67.pdfIn PDF document text
    • http://miwukewemiko.22web.org/answer_how_are_you_funny.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380076/normal_5fee0945b4d80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368975/normal_603e186a40547.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuvedije/2hi3lek/ates_ve_su_2_kisilik_oyna.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449973/normal_5ff8fddf79719.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rapodebo.epizy.com/bupobutujosewuzat.pdfIn PDF document text
    • https://f45985d3-969e-4a4b-a16b-f92b7c881388.filesusr.com/ugd/20da2d_a585478cd4534a79943c36c272dfd16c.pdf?index=trueIn PDF document text
    • http://kiromimejobodo.epizy.com/baby_ganesha_images_hd.pdfIn PDF document text
    • http://maderenefozido.rf.gd/how_to_program_ge_universal_remote_to_dvd_player.pdfIn PDF document text
    • https://14864a69-2465-45da-a912-c6f78a3f99b9.filesusr.com/ugd/409ca8_6d5765278c3f4e75a3c8e8782c6b1dbf.pdf?index=trueIn PDF document text
    • http://vipoxegoto.rf.gd/how_much_is_the_disability_support_pension_in_nsw.pdfIn PDF document text
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_0567a9ee06424cfba844c935a975601d.pdf?index=trueIn PDF document text
    • http://raxaxeve.rf.gd/did_the_plane_really_explode_in_wolf_of_wall_street.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db532873-8968-4da3-a86a-e1b0648678af/how_to_get_mouse_pointer_back_on_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb4be2e8-c305-49f1-9a9e-c30021430fba/kogibir.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8E 5392 bytes
SHA-256: 891b320314dc7a77ad222d4bf3974c552c0827fb6fa479a84ba79e0ccd9ec1ef
font_01_sfnt_off0000fdc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC7 10396 bytes
SHA-256: b73c7452006f04018ff5e0019e55c45fbb96bbd02427e7bdf7f29804ec1a1f22

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