Malicious PDF — malware analysis report

Static analysis result for SHA-256 382ee98d080c8ece…

MALICIOUS

PDF

81.9 KB Created: 2021-03-14 02:08:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c70f250710c65c16fcbd0e66702c1430 SHA-1: 58324ab68b4f69d06d6354f56f55578ae8c640ed SHA-256: 382ee98d080c8ece4fe2a5da18f6458b1ee51aa9535db8b49c7815ba0c9c51f7
66 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that lead to suspicious domains, suggesting a phishing or malware distribution attempt. The ML classifier strongly indicated maliciousness, and the presence of external URIs points to an attempt to redirect the user to a potentially harmful site. No scripts were extracted, but the overall structure and embedded links are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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.
  • 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://dugedepap.ru/award?keyword=phonetic+transcription+of+words+pdf PDF link annotation
    • http://homearfes.com/http_android_go_edition_phones_in_nigeriar26kq.pdfIn PDF document text
    • http://avtoshkola-region26.ru/theory_of_justice_brief_summary_by_chapter89p3t.pdfIn PDF document text
    • http://vas-rem.ru/how_to_remove_password_protection_from_mac1v5y8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483075/normal_603f2ca913d37.pdfIn PDF document text
    • http://cooldomen.space/punjab_castes_denzil_ibbetson02p5t.pdfIn PDF document text
    • http://my-favshop.online/93738439410ysi5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376602/normal_601a74a23232d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479210/normal_601c88eb8627c.pdfIn PDF document text
    • http://ita-yog.space/java_programming_language_free_online_coursedqjfy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379855/normal_6029a3ed774f2.pdfIn PDF document text
    • https://cdn.sqhk.co/lomekojop/haljc2i/48648472824.pdfIn PDF document text
    • http://good-production17.site/wowonovatigudugenujot2wdb9.pdfIn PDF document text
    • http://ketadiets.site/48750810567kc3pz.pdfIn PDF document text
    • https://cdn.sqhk.co/dukasavubu/wgcghgh/car_calculator_lease.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/byiOaOE/drive_in_movie_theater_los_angeles_tenet.pdfIn PDF document text
    • http://nanolenka.xyz/how_long_does_ue_boom_2_battery_lastsfktx.pdfIn PDF document text
    • http://jenupekob.iblogger.org/52278323688.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5fddb876f2a02.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://52431b39-7396-4b0c-bcaf-ab72d449a1bf.filesusr.com/ugd/f8cef3_82f700f5f22d4e53a2b9e97a7de97537.pdf?index=trueIn PDF document text
    • https://6a1e2a5f-c456-4288-b9d5-5378f87870fb.filesusr.com/ugd/076fac_b5ff92f8d4b7413f89fdee6834a2fdf9.pdf?index=trueIn PDF document text
    • https://200c4c3d-185b-4246-b99f-f40cd7065c99.filesusr.com/ugd/3ed902_d0ffce3cbcbf435cac0565775ccad133.pdf?index=trueIn PDF document text
    • http://merizipu.rf.gd/sugazawavafafini.pdfIn PDF document text
    • http://vofonusitebese.rf.gd/38617921079.pdfIn PDF document text
    • https://db244590-af71-4c33-bd6e-2f8f55f31281.filesusr.com/ugd/fdab61_416efc2072b542f5867332534416e85e.pdf?index=trueIn PDF document text
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_ab12986702f34a7caf95105dfd0b443a.pdf?index=trueIn 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_off0000fb63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB63 5304 bytes
SHA-256: 8f0efcb57970bde54ee8481fa3f4c0f10f41f3869b4d0e1b7ebcf9c0f4c25d39
font_01_sfnt_off00010d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D7C 13292 bytes
SHA-256: ff6580baf3c475422895df4066a38258e8d004f8e51f840606d22fb8a19c7893

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