Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d201c08c0daeab…

MALICIOUS

PDF

81.8 KB Created: 2021-04-03 06:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4e26f6551aaf0c8a43cfbf4a62be178 SHA-1: d988e6bce5f68d16ef55b358876c7694afca9400 SHA-256: 00d201c08c0daeab382ae0866d5292c8b566c8bfa0b1201ca2cc2081755235e0
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating external URI usage and is flagged by a machine learning classifier and ClamAV as malicious. The embedded URL points to a domain designed to appear as an answer key, likely a phishing lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/award?keyword=commonlit+answer+key+pdf
    • http://vosojivaru.mypressonline.com/genetics_powerpoint.pdf
    • http://kipokefurur.mygamesonline.org/gaxozuvinuselafem.pdf
    • https://static.s123-cdn-static.com/uploads/4448332/normal_5ffcf2f64e419.pdf
    • https://cdn-cms.f-static.net/uploads/4381534/normal_6064d06192a4c.pdf
    • http://zosazufinur.mygamesonline.org/apology_language_quiz.pdf
    • http://rajukilodagoje.mygamesonline.org/agency_theory_triangle.pdf
    • http://rujewazaxijaza.sportsontheweb.net/cardiovascular_disease_treatment.pdf
    • https://cdn-cms.f-static.net/uploads/4476285/normal_6067b9634c65a.pdf
    • https://cdn-cms.f-static.net/uploads/4425909/normal_6013f67c1f3a9.pdf
    • https://cdn-cms.f-static.net/uploads/4391001/normal_603b6c9b1502e.pdf
    • https://static.s123-cdn-static.com/uploads/4393625/normal_5ff2c46545f34.pdf
    • https://static.s123-cdn-static.com/uploads/4427509/normal_5febd3d6b5f10.pdf
    • http://lezofifividex.scienceontheweb.net/sulusamavataniwa.pdf
    • https://cdn-cms.f-static.net/uploads/4493602/normal_6016df60c197e.pdf
    • https://cdn-cms.f-static.net/uploads/4473971/normal_6029326dd0526.pdf
    • http://jekenufakewe.mypressonline.com/89726147564.pdf
    • https://static.s123-cdn-static.com/uploads/4491412/normal_5fdecd8a8310a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/6db6632c-602a-4bbe-9167-5166135939b7/tefisidovivibimutup.pdf
    • https://77bac38d-831a-46d6-8f22-d7743fcadc58.filesusr.com/ugd/5b9a87_494b100a42f24f74b0f05bc5a07bc0da.pdf?index=true
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_eacc9982b38f4e3fa04d6b94a91dece5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2a59b741-2761-4e28-9558-f163d5a6b153/best_free_switch_games_2021.pdf
    • https://2cfcb734-ec62-4cd9-b61c-03d4762ad765.filesusr.com/ugd/a891c0_2033a7ca7cc246ee8f8b9c738f52268c.pdf?index=true
    • https://ca30e0e0-ecf2-44ab-b6a2-fe26291458be.filesusr.com/ugd/34e21e_cad575947fc946c8a96590731d840480.pdf?index=true
    • 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_off0000f43c.bin
fad0c0d44df77966b6d98c4f8ca39f9afad8afb3a42e80dd829d1e355b6e6476		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF43C 5256 bytes
font_01_sfnt_off00010617.bin
550deb85267768ed6a4b74a6b7446a6852ec7d44178f2865d93afb0ce69007f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10617 10892 bytes
font_02_sfnt_off00012b26.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B26 4324 bytes

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