Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eae237988f9d40b…

MALICIOUS

PDF

69.0 KB Created: 2021-02-17 16:28:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9f1ad03ad924d5fb55e8e53dcf37f2b7 SHA-1: 43c53a8683d1c02a9cac8e241135d06effb0d897 SHA-256: 9eae237988f9d40b1776497169579a3657082f6181f2d3a9927f07abe13dd177
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains a large number of external links, likely to facilitate phishing or malware distribution. The presence of embedded URLs further supports this, directing users to potentially harmful sites like 'baarspo.ru'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://baarspo.ru/aws?utm_term=is+astro+a50+compatible+with+ps5 PDF link annotation
    • https://wufodiwefoveve.weebly.com/uploads/1/3/4/8/134891768/najuzakezo.pdfIn PDF document text
    • https://bofujobepoj.weebly.com/uploads/1/3/1/1/131164048/765982.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374682/normal_5fff439fa31fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501027/normal_6027f91c3b0ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415302/normal_600fc6977603b.pdfIn PDF document text
    • http://pupofikavize.iblogger.org/bahubali_2_movie_mp4moviez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387816/normal_5fe4c7fa3248e.pdfIn PDF document text
    • https://jefaxuler.weebly.com/uploads/1/3/0/7/130775921/tipirotufiv-kinobegeseg.pdfIn PDF document text
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/rumam.pdfIn PDF document text
    • https://nipobajomofak.weebly.com/uploads/1/3/4/6/134641158/zugig.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/bisapovepizaj/sogip.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/apache_ant_software_free.pdfIn PDF document text
    • http://kapixij.epizy.com/48220045716.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/marvel_strike_force_mod_apk_unlimited_everything.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/quimica_inorganica_libros_gratis.pdfIn PDF document text
    • http://dupevinituz.epizy.com/hardware_design_engineer_interview_questions_and_answers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF99 5608 bytes
SHA-256: 27a13dcf20f0bea5277dd8469213fcf91a5d5d4b96f360edc5f1f19b5c3c752f
font_01_sfnt_off0000e28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28F 10792 bytes
SHA-256: 52c7022797dc2ba3476fbb975b55c3e3fd3ee496cbbd462d5fc5f1a782ff1e74

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