Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17730309524d791…

MALICIOUS

PDF

67.6 KB Created: 2021-03-19 03:23:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c5c4a33d0112143e39d40153a7b0ce2b SHA-1: 6e941346ebfd8f3e6999964576d2e0a04302e13e SHA-256: f17730309524d791fececf07de483fe13b4952b8d5f47b8dd4ee2c51ee34eba0
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are embedded within what appears to be a link farm designed to improve search engine rankings. The primary URL, 'https://botokaw.ru/aws?utm_term=quikcell+edge+mini+bluetooth+headset+manual', is presented as a manual but likely serves as a lure to a malicious site. ClamAV detection and ML classification confirm the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7003

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://botokaw.ru/aws?utm_term=quikcell+edge+mini+bluetooth+headset+manual PDF link annotation
    • https://kemebawe.weebly.com/uploads/1/3/5/3/135313751/xunev.pdfIn PDF document text
    • https://migufakugiguxob.weebly.com/uploads/1/3/4/5/134579218/tewoxexugofano_kisaworuxuwam_bogodutawa.pdfIn PDF document text
    • https://kebedemozi.weebly.com/uploads/1/3/0/7/130775588/6420221.pdfIn PDF document text
    • https://gefivogixofix.weebly.com/uploads/1/3/0/9/130969648/pinafanam-xorarufi-guxufomubole.pdfIn PDF document text
    • http://miworusak.iblogger.org/roomba_960_costco_price.pdfIn PDF document text
    • https://gofupadosu.weebly.com/uploads/1/3/4/8/134853885/minozolezav_kekudidotut_fagelololeje_vavakez.pdfIn PDF document text
    • http://pozufopajosel.mypressonline.com/physical_science_notes_download.pdfIn PDF document text
    • http://wapotod.22web.org/53117884434.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/accounting_entries_in_sap.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/47809737961.pdfIn PDF document text
    • http://jawazapefaxuzit.mywebcommunity.org/alnus_nepalensis.pdfIn PDF document text
    • http://fakurivevid.scienceontheweb.net/72812433977.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/bifadimuwabunojax.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/yamaha_baby_grand_piano_g1_price.pdfIn PDF document text
    • http://piriveva.scienceontheweb.net/value_of_education_file.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://17673d3b-e5d0-4e0e-8211-f079fadf35f5.filesusr.com/ugd/13ae68_669a80437f6549979afa0ea602cf2879.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/88088916075.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/fiwif.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/cisco_packet_tracer_answer_key.pdfIn PDF document text
    • https://e06e8306-d71e-4c92-aa1b-e8c52eeb44cb.filesusr.com/ugd/bc4951_d4c3f6d0b6364d61a1586e78dc05595b.pdf?index=trueIn PDF document text
    • https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_d5651e4ebc5b47719e8f03ea1859c568.pdf?index=trueIn PDF document text
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_7eec98e0ebc444458c41d7195f09ece2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/face_authentication_aadhaar.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF112 5524 bytes
SHA-256: f58da25042b1488794303503bbc22a7a1446acdf3e49dcb8f7c4754f8a13e6b7

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