Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee1c59bf8b7913ec…

MALICIOUS

PDF

82.9 KB Created: 2021-02-26 19:09:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 47634ff2c866bd37ab265ca028fb88b5 SHA-1: 011bdf121fb14393d4279214019f5360010c5aa1 SHA-256: ee1c59bf8b7913eca48c77fe71b729587759939f99d548bd846fa1d051ffb6ef
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to URLs hosted on disposable domains, suggesting a link farm or phishing lure. The presence of numerous embedded URLs further supports the attack pattern of redirecting users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=what+is+the+purpose+of+mere+christianity In PDF document text
    • http://wivuperafuzo.mypressonline.com/why_will_my_xbox_360_not_connect_to_xbox_live.pdfIn PDF document text
    • http://inostrana.com/receipt_template_for_rentalzr1xj.pdfIn PDF document text
    • https://dipakexamima.weebly.com/uploads/1/3/1/0/131069759/panixenibaf.pdfIn PDF document text
    • https://lavozeto.weebly.com/uploads/1/3/0/7/130775819/fobibufomi.pdfIn PDF document text
    • http://momentshop.space/big_fish_a_novel_of_mythic_proportionsseh58.pdfIn PDF document text
    • http://kadaxejob.mypressonline.com/godovezebugepaxuganuxipi.pdfIn PDF document text
    • http://lefenup.22web.org/39802357592.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/can_i_read_transliteration_of_quran.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/dnd_5e_warforged_fighter.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/on_the_road_truck_simulator_free_download.pdfIn PDF document text
    • https://tugojomabam.weebly.com/uploads/1/3/4/5/134588125/9505793.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tefolinum.epizy.com/binomische_formeln_bungen_rckwrts.pdfIn PDF document text
    • http://fataragoreb.myartsonline.com/27983748916.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/nobototodekede.pdfIn PDF document text
    • http://gafodix.myartsonline.com/how_to_reheat_baked_ziti_in_air_fryer.pdfIn PDF document text
    • http://zajukefed.epizy.com/bajrang_dal_song_2017_masstamilan.pdfIn PDF document text
    • http://kokidudelilusib.epizy.com/67517727386.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/hq_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/43268857730.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/rare_forms_of_synesthesia.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_off0001070e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070E 5336 bytes
SHA-256: 20b950d421eeac4a9fb7b028e4f44232ef2ef8b6b17d4c1e6d803c9e7c8746a3
font_01_sfnt_off00011921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11921 11048 bytes
SHA-256: 35368532243ed3eef6743bd689c072e0e421394fbc53dfdd490cf97c31c1718a

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