Malicious PDF — malware analysis report

Static analysis result for SHA-256 b060bbf8b2337aec…

MALICIOUS

PDF

83.2 KB Created: 2021-04-02 06:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 977361f7c9fe362254a16126106f8226 SHA-1: ed3f6d8b6bfd3e962f695fff75c6f39dad0ddae5 SHA-256: b060bbf8b2337aec3d59f12bf5efd3d3d3ae58d2ca9ff02665bb3647ae38180d
96 Risk Score

Malware Insights

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

The file is a PDF that contains embedded URLs, one of which is suspicious and likely leads to a malicious PDF. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body appears to be malformed or obfuscated, but the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 http://punevufazeji.iblogger.org/nukepezapamabad.pdf In PDF document text
    • http://baxijemapuzoxu.22web.org/fate_core_character_sheet_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/3IgsHNHpEfs/wb?keyword=social%20psychology%20theories%20in%20moviesPDF link annotation
    • https://s3.amazonaws.com/mivokozibu/putapagilanakowofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7bb49ef-cd3b-4742-a132-dd372daaf01b/irobot_roomba_675_robot.pdfIn PDF document text
    • http://tagugatukosag.epizy.com/7808721873.pdfIn PDF document text
    • https://52b03d57-94e3-497b-b2ee-5a576b8f136c.filesusr.com/ugd/67ae49_6c6bc99d1842420c922a6b5c20953bc1.pdf?index=trueIn PDF document text
    • http://toxawilel.epizy.com/string_theory_for_mathematicians.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/zeruviputerakutuvavu.pdfIn PDF document text
    • http://nukasero.epizy.com/job_interview_powerpoint_template_free.pdfIn PDF document text
    • https://367e539a-c541-4439-991c-4bf2bef2aa7a.filesusr.com/ugd/77d535_898982f7096448da9f8809f4306d0cc8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/finding_equivalent_ratios.pdfIn PDF document text
    • http://popadugabi.rf.gd/43049522549.pdfIn PDF document text
    • http://lopusasiloxoka.epizy.com/blessing_poem.pdfIn PDF document text
    • http://wesukudepabu.epizy.com/jegiviwotufopaza.pdfIn PDF document text
    • https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_b3ca599a58a34899a4ce394cfe4639a2.pdf?index=trueIn PDF document text
    • https://147762ec-90f0-4523-8579-43cb3cd17c82.filesusr.com/ugd/6c48b9_eeef4153739043bebb478972cf90d5f7.pdf?index=trueIn PDF document text
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_8a31f987ab9f441dacf8a7e1c7fc34de.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bde38528-0cf0-437d-9662-3d5b812499c4/para_q_sirve_la_vitamina_de_magnesio.pdfIn PDF document text
    • http://zagopemolal.rf.gd/sujipuvudenas.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/request_letter_format_for_adding_authorised_signatory.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/amazing_grace_piano_sheet_music_key_of_g.pdfIn PDF document text
    • https://e42ce0b3-f376-4cb5-9abe-507fdbb9570c.filesusr.com/ugd/603474_1fb4cbe36b6a4e88b7236e7afad4a77f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f49be580-77b3-4861-91e2-39e4629e350d/what_food_contains_alkaline.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90D 5400 bytes
SHA-256: c47432be64d164f25de42134a9b904b0699d65751005e6e6c063ee17e6ce7816
font_01_sfnt_off00010b29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B29 10748 bytes
SHA-256: 19f40c480ee18ea7b8f7248f9835f08413b21a470d977c3e86ac62e768627d4a
font_02_sfnt_off00012fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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