Malicious PDF — malware analysis report

Static analysis result for SHA-256 a124d429e17f9244…

MALICIOUS

PDF

73.1 KB Created: 2021-02-16 00:18:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f1f69d9f42582dd3a8eac562084c11c3 SHA-1: 3b25152bad05b13e1a00bc48b874ddbd422fdbc7 SHA-256: a124d429e17f9244a90ee7ac405dc8715f9b1b3e860451901a057dddc436ff6e
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body contains a title related to serial killers, which is likely a lure to encourage users to click on the embedded malicious URL. No scripts were extracted, but the presence of external URIs suggests the document is designed to redirect the user to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/strik?utm_term=why+do+serial+killers+have+no+empathy PDF link annotation
    • http://usmileofficial.site/genupcor3h.pdfIn PDF document text
    • https://witowufagefalob.weebly.com/uploads/1/3/0/7/130738848/wugabefaroz-kurawitisuxonij-faxamaxegekoguj.pdfIn PDF document text
    • http://tersq.space/bawli_tared_sapna_choudhary_video_songs0m4z.pdfIn PDF document text
    • http://tophomework.space/318948331i16an.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/bird_screamer_gunteq8h.pdfIn PDF document text
    • https://gononazenikemad.weebly.com/uploads/1/3/4/4/134482012/0abc4efcf3.pdfIn PDF document text
    • https://jajaleregonu.weebly.com/uploads/1/3/4/2/134235513/8997d7e.pdfIn PDF document text
    • http://yoga-italy.space/self_adhesive_pvc_sheet_for_photo_album659ji.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/baxadelefofibuz/44522336376.pdfIn PDF document text
    • http://bemuvubovewe.epizy.com/insanity_workout_fitness_guide.pdfIn PDF document text
    • http://ferefifadiziv.rf.gd/algebra_2_regents_august_2016_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/html_bootstrap_template_example.pdfIn PDF document text
    • http://meduzifovum.epizy.com/favonanimiw.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/88722285449.pdfIn PDF document text
    • http://doroxokile.epizy.com/california_dmv_registration_renewal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/daycare_business_plan_template_free.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_off0000e2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A8 5436 bytes
SHA-256: a57af5abeb50384acd8578150bee5a74881c64699bca0adb762b49ed56777875
font_01_sfnt_off0000f50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50F 10112 bytes
SHA-256: f98caeb4da0b29b57e223a13a131f00f212744f793c77a16ba96a34fe6a1fda5

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