Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a5ec9a32d2ccf6c…

MALICIOUS

PDF

90.5 KB Created: 2021-03-20 04:11:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8abe67014f467c79be77758a7a82b4f2 SHA-1: 72b4d73d756b6230cb866f3dbecae82d5d286442 SHA-256: 1a5ec9a32d2ccf6cafc6fafc1f5da767c7a206f5addf45f2ea4bc7f78147d367
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The embedded URL, disguised as a manual, is a common lure for phishing attacks. While no scripts were explicitly extracted, the PDF format and the presence of external URIs suggest potential for embedded JavaScript or other exploit mechanisms.

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://jumiwimov.ru/wix?keyword=jensen+clock+radio+manual
    • http://rameautbxy.space/rajuvafexorunujetosptb3.pdf
    • http://tasefuvakol.22web.org/how_to_draw_cute_cartoon_eyes_step_by_step.pdf
    • http://bupetud.xyz/taurus_g2c_9mm_luger_reviews7clav.pdf
    • https://static.s123-cdn-static.com/uploads/4413702/normal_5ff8de899dccf.pdf
    • https://cdn-cms.f-static.net/uploads/4450746/normal_604404ce3afc9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://02bc4616-4eae-4b38-b2c9-0e654f754ee0.filesusr.com/ugd/069df5_08ebb542636a452c992f72e7187081ea.pdf?index=true
    • https://734e8db3-b9db-457c-abaa-08c06218e7ae.filesusr.com/ugd/f6bb82_74df876b8d594bbab9b2ff7b10fb4ae2.pdf?index=true
    • http://luboligivite.epizy.com/3985315942.pdf
    • https://uploads.strikinglycdn.com/files/c9e3d6bd-4739-458d-9e4e-aeaa3c95450f/autocad_3d_drawing_into_2d.pdf
    • https://uploads.strikinglycdn.com/files/88c44ce9-04cd-4677-92de-e44748cbc341/links_awakening_face_shrine_music.pdf
    • https://uploads.strikinglycdn.com/files/5c25b027-177b-4259-a4a7-793dc2b1a0de/vuliposabi.pdf
    • http://litosivofojolid.rf.gd/how_to_see_street_view_on_google_maps.pdf
    • https://s3.amazonaws.com/sedowedi/hamilton_beach_steamer_rice_cooker.pdf
    • https://s3.amazonaws.com/jizubisetebof/16427175108.pdf
    • https://s3.amazonaws.com/lovomijelun/brother_mfc_7340_service_manual.pdf
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_18d0e2a8c99f4f2582164418b308c650.pdf?index=true
    • https://s3.amazonaws.com/xoguwavosuje/75286901186.pdf
    • http://buxadupifizir.rf.gd/69265797534.pdf
    • https://c6506652-bf5e-4f52-be36-03dbfaede22c.filesusr.com/ugd/f74919_d51f2868891f4e5e9ca5d78df05d686d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a7554991-7723-48c9-9864-343a902a2831/15394186867.pdf
    • https://s3.amazonaws.com/xukanomarexumu/free_printable_writing_sheets_for_1st_graders.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_off000123b9.bin
4c520c6ef5e13c90eeecffef952dfff1ab99bfc620ffc567810cf19dcb2f8c38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123B9 5140 bytes
font_01_sfnt_off0001351e.bin
c4179f6d994b3c7ed9b203824c26f3e989a84dde56f3f2a6ec51131d076b7a21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1351E 11516 bytes

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