Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d3cef362b03009…

MALICIOUS

PDF

76.3 KB Created: 2021-03-03 23:25:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5d4e87eab824ab69515bc881178eda23 SHA-1: 6ec4ff9125103cb0ac7adea972d2398fd327ff1a SHA-256: c3d3cef362b0300910810e94c323fa9c863b99470ef5a9766a65ba199b51e196
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 0.8972

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=cricut+expression+2+reviews+youtube PDF link annotation
    • http://sberetransfer.online/eulogy_template_for_dad_ukxgjkx.pdfIn PDF document text
    • http://redita.fun/anne_frank_powerpoint_tesfloa0.pdfIn PDF document text
    • https://vedabigejiko.weebly.com/uploads/1/3/1/4/131438046/madiku-rirogivejukozit-jitidoxox-wekizuturumejuz.pdfIn PDF document text
    • https://dutukoviwu.weebly.com/uploads/1/3/0/8/130873875/ace72f26bfe4.pdfIn PDF document text
    • http://buybritishcat.com/application_for_schengen_visa_italyynmey.pdfIn PDF document text
    • https://bupudotededifo.weebly.com/uploads/1/3/5/3/135323991/98c9ae8.pdfIn PDF document text
    • http://ijmalan.xyz/favo_de_mel_churrascaria_goiania_precoyhotm.pdfIn PDF document text
    • https://jofomozali.weebly.com/uploads/1/3/5/3/135387403/5038452.pdfIn PDF document text
    • http://merishwheelrecords.com/vizojuborugonujunozpsna0.pdfIn PDF document text
    • https://sanepawoja.weebly.com/uploads/1/3/4/5/134579143/5223708.pdfIn PDF document text
    • https://vorevowupi.weebly.com/uploads/1/3/4/6/134633589/5258810.pdfIn PDF document text
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/f3a3971ad01528.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sitok/momanutujemijidixelowota.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/commandos_2_destination_paris_2._0.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/43612414906.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/pexutobesixizajomumafax.pdfIn PDF document text
    • http://mipolerabafobe.epizy.com/ppsspp_emulator_games_for_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/31397577102.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/al_quran_madinah_terjemahan.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/e._i_report_number.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_off0000f34d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34D 5184 bytes
SHA-256: 00fadeb2b16be228bed14a2f5247f25db285f7db2586a93494e65a349cbfc29d
font_01_sfnt_off00010515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10515 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00010da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA3 10148 bytes
SHA-256: 70a6fc8cbeeb94744afacdf55dde26631c4da56a03863c779968ddf70b6f190b