Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c599e97051e09ee…

MALICIOUS

PDF

81.7 KB Created: 2021-03-17 01:49:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6551a8bfcc2ef26790e61a48a12582c3 SHA-1: 612f605ff04bacddbb9beb57d44bec8963c93837 SHA-256: 3c599e97051e09ee1d8425a7bc2f616256da9b5bb8f16c963e7756250a507453
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to business analyst goals.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://mezovuduw.ru/wix?keyword=smart+performance+goals+for+business+analyst
    • https://cdn.sqhk.co/kegufamop/ihziehm/lagoz.pdf
    • http://pumujavebedopa.iblogger.org/bernoulli_differential_equation_solved_problems.pdf
    • https://cdn.sqhk.co/laxepinam/apBjdij/asthma_guidelines_pediatrics.pdf
    • https://cdn.sqhk.co/mazinatefoso/3idWuol/74709951709.pdf
    • http://jofarofuwudeveb.66ghz.com/directors_report_format_uk.pdf
    • https://cdn-cms.f-static.net/uploads/4475194/normal_5fe8928da5d8b.pdf
    • http://logekolumo.22web.org/zepufami.pdf
    • https://cdn.sqhk.co/fusevesapime/VhargdF/pokemon_red_and_blue_gameboy_advance_rom.pdf
    • https://static.s123-cdn-static.com/uploads/4416935/normal_5fe0bc8d9a23b.pdf
    • https://static.s123-cdn-static.com/uploads/4450039/normal_5fcc9ada679ba.pdf
    • https://cdn.sqhk.co/genopeno/ePlBdhe/watch_shows_with_friends_online_hulu.pdf
    • https://cdn.sqhk.co/jotapepikota/hGC5giF/9496998868.pdf
    • https://cdn.sqhk.co/luwagoma/idic2hc/how_to_manage_a_farm_business.pdf
    • https://cdn.sqhk.co/xedomobedusi/gjjtghn/92324967643.pdf
    • https://cdn.sqhk.co/vefomatakin/ggDhjNG/37278840005.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dovaxobuxi.rf.gd/52208777081.pdf
    • https://uploads.strikinglycdn.com/files/6ddd0438-081e-4065-a99f-4a06d226da78/fokenadunujavaze.pdf
    • http://golukotekitu.epizy.com/etapas_de_la_auditoria_de_estados_financieros.pdf
    • https://uploads.strikinglycdn.com/files/6058fd6f-1fd0-42cb-8ee1-6a32fbb25d56/how_to_program_my_dish_network_remote_control.pdf
    • http://seropurubok.epizy.com/solid_waste_management_lecture_notes.pdf
    • http://nonomajemiw.rf.gd/18971276423.pdf
    • 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_off0001028e.bin
745b55eba9fdbda791678c5896ff58a20ba4a96fe2a3b8d6bb7d34e6ab121566
pdf-font-stream PDF embedded font (sfnt) at offset 0x1028E 5680 bytes
font_01_sfnt_off000115d3.bin
61f820349ebc0880a7a72647d5a8c8ccb1114be2dcbe6184b4f20cf151c53c84
pdf-font-stream PDF embedded font (sfnt) at offset 0x115D3 10412 bytes