Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb7fc53e91f6119…

MALICIOUS

PDF

75.2 KB Created: 2021-03-18 08:22:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: f97e814779279007b9edbda79dc1cb3d SHA-1: 53bfd1675c7a3f54fa23ab9fd0e060baffdef408 SHA-256: 8cb7fc53e91f61191550aa37d7a659eb86437d218e4c3080da8d03e212dfad15
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially corrupted, suggests a lure related to job opportunities, consistent with phishing tactics.

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://xezojetit.ru/strik?utm_term=what+jobs+are+the+navy+in+demand+for PDF link annotation
    • http://bosemefawixuwov.mypressonline.com/epidemiologia_clinica_fletcher_4ta_edicion.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/honeywell_programmable_light_switch_manual.pdfIn PDF document text
    • http://mibemuxagegija.mywebcommunity.org/76467149915.pdfIn PDF document text
    • http://bepifukikuku.mygamesonline.org/josisoxufakobotopamejifu.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/nemafu/calmato_alpha_40_sport.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/august_2018_a4_calendar_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8c1ab6b-56b3-467d-a383-a33b0a709825/first_alert_co400_expiration_date.pdfIn PDF document text
    • http://dopemelufo.epizy.com/23984433538.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/bass_guitar_tuner_free_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992c69d0-949c-4373-a453-7d96b0458ad3/pomujimadipaje.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/bufopuzafafokamexapa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6d0d504-554f-4ff8-8e7e-892b7af64c3b/pibawanowofibipekul.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/template_for_food_inventory.pdfIn PDF document text
    • http://mujebik.atwebpages.com/53364290559.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/58056888315.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/euphemism_worksheets_english.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/understanding_nutrition_whitney_rolfes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9bb4905-e727-420c-a5a1-f307c88f5061/el_lenguaje_del_cuerpo_julius_fast.pdfIn PDF document text
    • http://varupijijajeb.rf.gd/how_to_thank_a_board_member.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_off0000e7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AA 5504 bytes
SHA-256: a47cc3e88240f8b5143454e9c53b50622a89e3615f736d12a341c62dd2ac81be
font_01_sfnt_off0000fa50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA50 11036 bytes
SHA-256: 96f661042578c6795effc91fbf5ddb495e972c4b746a473896d997c629755089

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