Malicious PDF — malware analysis report

Static analysis result for SHA-256 27abf25c88016845…

MALICIOUS

PDF

90.0 KB Created: 2021-03-12 03:54:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 10ab33611e05b6a393483d6ee396ab28 SHA-1: 08eba96d0d83a9fb643511e4574b1ec9de4ad1e2 SHA-256: 27abf25c88016845e9090437331a7ba124c045f23f1e2464e80b293115932f5d
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5239

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/award?keyword=fluke+179+multimeter+manual+pdf PDF link annotation
    • http://eushopvmn.site/804333375940c2cv.pdfIn PDF document text
    • http://nikaold.site/ganapati_atharvashirsha_lyrics_in_marathiplaji.pdfIn PDF document text
    • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/165b13e.pdfIn PDF document text
    • https://fuzimisadu.weebly.com/uploads/1/3/5/3/135319831/tikaviwawisagazasuju.pdfIn PDF document text
    • http://wiinorama.space/jambalaya_hank_williams_sheet_music3jgru.pdfIn PDF document text
    • http://poradoit2.site/serotonin_power_dietnyg83.pdfIn PDF document text
    • http://cuzinfo.ru/how_to_calculate_taylor_seriesvky0z.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/types_of_organizational_structure_in_nursing_management.pdfIn PDF document text
    • http://gidetux.rf.gd/wagner_power_painter_220_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/problem_solving_skills_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/zimunawur.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/couple_goals_pictures.pdfIn PDF document text
    • http://vofabij.epizy.com/pda200e_induction_loop_system_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/27488095512.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/gamuxanurakukoruzupetake.pdfIn PDF document text
    • http://tajegigug.epizy.com/70745215186.pdfIn PDF document text
    • http://tokafibalo.epizy.com/todasiwodakipofexemol.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/samsung_xpress_m2880fw_wifi_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/45514546997.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/astm_a370_14_free.pdfIn 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_off00011fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FDE 1564 bytes
SHA-256: ef9eb7e92a0a26b3fc46c944b823bd04d0eb5440f7e0ed87b58b6203c5c2e2e7
font_01_sfnt_off000127c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127C1 5316 bytes
SHA-256: e096c4fb25202aa3403ab2cbc3dff9cb295c12f34c8129d04998a70f35a96202
font_02_sfnt_off000139d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139D3 16420 bytes
SHA-256: 119e320bc10547f9324de137d706bd1bc6f2a3c302bfee09e154a5660bea701a

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