Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6b9af31f7355ef0…

MALICIOUS

PDF

73.9 KB Created: 2021-02-25 09:07:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: b3f777b360b9ab59eeb195f2ff83a3ef SHA-1: 7e5f93c888c7afd69977edc798ef820e4c4c56f3 SHA-256: a6b9af31f7355ef05adc2ff6f2cd770fe2b56965996dbecb3af86cf6d5957f3f
96 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be related to search terms, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 https://jottigo.ru/award?keyword=carry+on+luggage+weight+limit PDF link annotation
    • http://microbladingcertificationdfw.org/adobe_reader_softonic4h5gq.pdfIn PDF document text
    • http://easylearning.space/sinilavumozorozeg4uyx.pdfIn PDF document text
    • http://2020coupons.info/xekitogojezar4aacf.pdfIn PDF document text
    • http://rivoduzajoki.iblogger.org/metallica_enter_sandman_lyrics.pdfIn PDF document text
    • http://hookup154.fun/website_creation_software_for_pc8hpdt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bolunivagoxel.epizy.com/dudiw.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/flipkart_bedsheet_below_500.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/gopixejijivemiv.pdfIn PDF document text
    • http://mubadel.epizy.com/for_mac_os_sierra.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/65820037522.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/glencoe_geometry_teacher_edition_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/android_tv_box_max_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/preparation_of_benzanilide_from_benzophenone.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/mapijejudo.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/22612180986.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_off0000e7e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E1 5020 bytes
SHA-256: b08914dfa37e3316bd85e91339faf711611c1b8c1ec09856ad2349f4fee671bf
font_01_sfnt_off0000f8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DC 10028 bytes
SHA-256: ae9c44c096e627a514a9b061c6d93de526a4f38392f4f5c1a551d2de4d854871

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