Malicious PDF — malware analysis report

Static analysis result for SHA-256 d734170a3943b136…

MALICIOUS

PDF

81.3 KB Created: 2021-03-09 20:31:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5a9ef325dadef7d16aabfa592a542f3 SHA-1: 4c11deadfe8671655c6bb7e0f21e6d38f49e2f50 SHA-256: d734170a3943b1362e7b827aa3f49f010f5678e4b75013f859fea521af58044c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The embedded URL likely serves as a lure to a phishing or malware distribution site.

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://midufefew.ru/wix?keyword=matoya%2527s+cave+ff1
    • http://canonsburglake.org/blank_business_model_canvas6kdop.pdf
    • http://trikotoria.ru/269431682290blqw.pdf
    • http://karnaval.host/dir_655_als_access_point5rvb5.pdf
    • https://static.s123-cdn-static.com/uploads/4482631/normal_5fed57f196168.pdf
    • http://molotkov.site/97292841365972zl.pdf
    • https://cdn-cms.f-static.net/uploads/4486522/normal_5fdc252c0825f.pdf
    • http://axecheat9.xyz/vajivabupelonazu518kw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b355086d-09eb-4fba-b6ac-ed6c35ae78ae/software_tester_course_near_me.pdf
    • https://uploads.strikinglycdn.com/files/ecd77aab-e881-4597-9961-2afe61556934/summary_of_the_golden_kite_the_silver_wind.pdf
    • https://uploads.strikinglycdn.com/files/80d47c63-6259-488b-98a4-91dbe4f37815/is_peloton_worth_it_2020.pdf
    • https://uploads.strikinglycdn.com/files/855db84e-c259-48f4-9eaa-5043f5a42721/wahl_100_series_clipper_combs.pdf
    • https://uploads.strikinglycdn.com/files/86fb3ce3-a051-434a-9e6d-3bd71c21ffd1/68992586274.pdf
    • https://uploads.strikinglycdn.com/files/3309e17a-8540-4ce8-bb04-0f6ee0470d3e/this_sex_which_is_not_one.pdf
    • https://uploads.strikinglycdn.com/files/cfd81441-f382-44d3-a605-4022d0c7a165/how_long_to_cook_turkey_in_rotisserie.pdf
    • https://uploads.strikinglycdn.com/files/08acb3b4-fc3e-4448-bb85-0a92637bdd72/fatexuz.pdf
    • https://uploads.strikinglycdn.com/files/3f1ba4d9-f514-434e-bc71-86b3a2de8ec5/watefovono.pdf
    • https://uploads.strikinglycdn.com/files/db4807fd-07a5-473e-9de8-96ce9198c857/law_books_for_sale_in_pakistan.pdf
    • https://uploads.strikinglycdn.com/files/6b946ea0-b390-465e-8145-5444479200b7/siemens_plc_version_control_software.pdf
    • https://uploads.strikinglycdn.com/files/b4bb95c7-3649-4055-a114-1e519529cdcf/dofutivimexegejinuvowetak.pdf
    • https://uploads.strikinglycdn.com/files/3815610f-e020-4cc5-8c9d-fe00d90735df/51887442245.pdf
    • https://uploads.strikinglycdn.com/files/d25f4ee2-1f59-4002-9a92-acc0e8352885/goxilubitakoreranumixiw.pdf
    • https://uploads.strikinglycdn.com/files/2169436c-8080-4013-a8be-ee4aedc98910/89349390120.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_off00010340.bin
36ac064defc663309ea69c0f578b504f4a2b06ae9040755d0af50a3ca8a05e2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10340 5000 bytes
font_01_sfnt_off00011489.bin
067a120766c1137bb2521569f991be35338997fa938ebad746e34f7bfd1dff17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11489 10240 bytes

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