Malicious PDF — malware analysis report

Static analysis result for SHA-256 9176a54bf9f1e8a6…

MALICIOUS

PDF

74.7 KB Created: 2021-03-26 15:43:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac340ce3e70774f2b264ba0db801c8a4 SHA-1: 102ca152fc1e1ef571f50f2589fcf2262abf76e8 SHA-256: 9176a54bf9f1e8a6f93adce8d67ed58f96df08b372e2f0ee3636a238317219e7
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. While no scripts were directly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=ace+3.3+answers
    • http://4d-5d.com/ejercicios_para_ataxia_cerebelosa0hj9j.pdf
    • https://cdn.sqhk.co/gezubesekar/dbfhegg/open_broadcaster_software_studio_free.pdf
    • https://cdn-cms.f-static.net/uploads/4404514/normal_6016c67b257b1.pdf
    • https://cdn-cms.f-static.net/uploads/4368999/normal_602677e109523.pdf
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdf
    • https://cdn.sqhk.co/mugodetutag/Dgfhgjh/59224390938.pdf
    • http://qwonder.space/simple_modern_house_bloxburgoqr6s.pdf
    • https://cdn.sqhk.co/rasepotobami/gfXgcaY/steven_universe_warp_whistle.pdf
    • http://pe50off.pro/wenakavefivu1ryki.pdf
    • http://biolinkus.me/312023727553cbfq.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/e0c28352-5d19-4ab4-9acc-4277d1508012/formato_de_tesis_grado_unam.pdf
    • https://s3.amazonaws.com/nilititonawafim/21986319645.pdf
    • https://uploads.strikinglycdn.com/files/c904d6b4-b403-470c-8155-94f142f0ff36/what_is_the_main_purpose_of_a_survey.pdf
    • https://23fe9111-5aa3-4288-b7a4-a84c242bb647.filesusr.com/ugd/d35b85_02a73acb5b18404c9f19ad2f6314484d.pdf?index=true
    • https://s3.amazonaws.com/datarofapakil/xuwijazosopabusisisemozuz.pdf
    • https://s3.amazonaws.com/wemazun/what_is_joanna_gaines_net_worth_2020.pdf
    • https://uploads.strikinglycdn.com/files/109513f6-ee3b-42c4-b3f1-816009b17d23/taylor_weight_scale_battery.pdf
    • https://s3.amazonaws.com/vanatul/when_did_the_great_depression_start_in_canada.pdf
    • https://uploads.strikinglycdn.com/files/29cd8d35-60c2-4fc6-b018-8c06ab8e49ea/if_2_players_have_one_pair_who_wins.pdf
    • https://cae2aa39-5014-47ec-b549-0fed73f36d02.filesusr.com/ugd/c8683e_223a503c040a40ce9cccc101aeac9878.pdf?index=true
    • https://uploads.strikinglycdn.com/files/415d0a22-2cd1-47e1-be69-433214f5fada/dlink_dir_655.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da38.bin
c878cc8d4a1db85372aecd4c8be11afb34915ed0a3732d8cac38c5bb7dca7bab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA38 4588 bytes
font_01_sfnt_off0000e9c9.bin
8100fda5f39c5d58f6eb4424694bbed0976f5b3ca81f0bff27996ec8746025dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C9 11116 bytes
font_02_sfnt_off00010fb9.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB9 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.