Malicious PDF — malware analysis report

Static analysis result for SHA-256 de498094e59e9cf0…

MALICIOUS

PDF

74.8 KB Created: 2021-03-14 13:28:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5c38302f43ab97d5feebc3afcd3982e SHA-1: 9d216d607e3aa12baafeedc5b902ed15d370561b SHA-256: de498094e59e9cf06f3b315e7ed1c4bc1764cc8b197dccd220055ff6458254ae
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest it functions as a lure to a malicious website.

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://pelibifir.ru/strik?utm_term=athenaze+book+1+pdf
    • http://verification-help.business/is_milwaukee_school_of_engineering_a_good_schoolfxtq0.pdf
    • http://1eyvgo.xyz/xujesididutazuxupozagrxjqv.pdf
    • https://cdn.sqhk.co/vopiruwikil/hibrZow/69832575020.pdf
    • https://cdn.sqhk.co/xivomojuf/gegd2id/tijilevapokil.pdf
    • http://vegixojarek.iblogger.org/how_to_do_a_narrative_story.pdf
    • https://cdn.sqhk.co/gulanuwe/qs2heDB/70720166749.pdf
    • http://casser.xyz/manual_climatizador_cadence_6009qu6s.pdf
    • http://zoxatejisiv.22web.org/xogatugu.pdf
    • http://pugisapi.mypressonline.com/zabexewo.pdf
    • http://gopidap.scienceontheweb.net/26036789761.pdf
    • http://kluruu.info/carrier_infinity_thermostat_installation_manualoag9s.pdf
    • http://uscreditmonitoring.info/catalyst_2960-_c_manualb4h9i.pdf
    • http://tradestaroffice.com/how_to_subscribe_for_free_on_twitch_with_amazon_primehqr2o.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zasuwunal.myartsonline.com/otite_externe_aigue.pdf
    • http://jajunegetilu.rf.gd/sistema_mexicano_de_alimentos_equivalentes_para_pacientes_renales.pdf
    • http://pewazeje.rf.gd/21356479320.pdf
    • https://s3.amazonaws.com/goviwigax/full_form_of_asc_in_indian_army.pdf
    • https://s3.amazonaws.com/mijumomub/binaural_beats_for_astral_projection_free.pdf
    • https://s3.amazonaws.com/midaguvimabof/tasorebiwoju.pdf
    • https://s3.amazonaws.com/muvojugejoxip/87351793644.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_off0000e142.bin
458178836a98629a240a2a323ce973d8cc5981700c57e71821f7aaf2ebdc9123
pdf-font-stream PDF embedded font (sfnt) at offset 0xE142 5116 bytes
font_01_sfnt_off0000f2b2.bin
ea69c7bfe5d75c23f834155768febd2c3b80e5f13d2184ffc07ba15121a857d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B2 13100 bytes