Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b09bb742e74a2d7…

MALICIOUS

PDF

77.5 KB Created: 2021-03-03 09:25:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d4069092a43c2dfc718cd4a166701891 SHA-1: 866ffc61879d2628df85efed40075bb45818f5c2 SHA-256: 9b09bb742e74a2d70ebe866bceeeda5e82b13e9bfb3c73e16593a76c4bf051a3
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to 'cub cadet ltx 1042 deck removal'. No scripts were extracted, but the presence of external URIs and the overall detection suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/strik?utm_term=cub+cadet+ltx+1042+deck+removal PDF link annotation
    • http://vidclips.design/17180716604k4vpt.pdfIn PDF document text
    • http://basiditdcf.space/awadhesh_premi_gana_video_songd03pg.pdfIn PDF document text
    • https://cdn.sqhk.co/pajijolabalu/icEwp4Y/bounce_house_rentals_near_me_now.pdfIn PDF document text
    • http://springtea.space/el_amor_en_tiempos_de_colera_filmrz0sv.pdfIn PDF document text
    • https://cdn.sqhk.co/jobubexivex/ghhaTjj/find_my_phone_by_android.pdfIn PDF document text
    • http://3gusevshop.space/google_earth_android76d9d.pdfIn PDF document text
    • http://naguvogegexaze.22web.org/37865955322.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/audifonos_bluetooth_huawei_am61_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/connect_xbox_360_controller_to_windows_10_wireless.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/36064407901.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/codewars_sign_up_answers_javascript.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/wow_bfa_balance_druid_pve_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/mobebidatoz.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/price_of_2020_lexus_rx_350_f_sport.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/98477659617.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/common_answers_to_interview_questions_weaknesses.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/boverkets_byggregler.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE466 5404 bytes
SHA-256: 7017b37204ce07e9c0035854cad01f7600a6b9075f0e26e748e2b9e93704eaec
font_01_sfnt_off0000f6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DD 10348 bytes
SHA-256: 1e351027c89580948ec1bef3aa76b72d6e65afeca4f2848db3a0d6086c5fba10
font_02_sfnt_off00011a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A38 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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