Malicious PDF — malware analysis report

Static analysis result for SHA-256 336f9210d21e0115…

MALICIOUS

PDF

65.6 KB Created: 2021-01-19 04:39:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d07567dbe665ce9bab6f19e65f2dc9f2 SHA-1: c0df86ff72ea942bf6929dbc65cc069910bf4cdd SHA-256: 336f9210d21e01153fd5f1c0767a2d3f69627c143bcdfbc7d8001a4072ac756c
96 Risk Score

Malware Insights

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

The file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URL and the document body suggest a phishing or social engineering lure, directing the user to external resources. No scripts were extracted, but the PDF structure itself contains malicious indicators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://maypoin.ru/123?utm_term=every+time+you+go+away+lennon+stella PDF link annotation
    • https://cdn.sqhk.co/jogekiluse/gj8I2Xk/learn_chinese_learn_mandarin_free_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lutidofele/hiESgfb/fokaxenamuzitolexa.pdfIn PDF document text
    • https://cdn.sqhk.co/sanevujaguda/5hdzjei/jawidusufadadabemamomos.pdfIn PDF document text
    • https://site-1223179.mozfiles.com/files/1223179/6338222970.pdfIn PDF document text
    • https://site-1177265.mozfiles.com/files/1177265/acog_guidelines_for_gestational_age.pdfIn PDF document text
    • https://site-1177443.mozfiles.com/files/1177443/18619713717.pdfIn PDF document text
    • https://site-1180194.mozfiles.com/files/1180194/comprehension_worksheet_grade_6.pdfIn PDF document text
    • https://site-1168377.mozfiles.com/files/1168377/hofstede_insights_usa.pdfIn PDF document text
    • https://site-1168059.mozfiles.com/files/1168059/sarobusosapipokanoso.pdfIn PDF document text
    • https://site-1166068.mozfiles.com/files/1166068/wesanereras.pdfIn PDF document text
    • https://cdn.sqhk.co/kozuvurop/jdngcFs/wizened_antonyms_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/ihheHjW/61814020502.pdfIn PDF document text
    • https://site-1171371.mozfiles.com/files/1171371/xewidegesipuwisizide.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/vonuxagupeduze/shoe_dept_jobs_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/gijeravatabivavel.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/building_construction_detail_drawings.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/roblox_cheat_engine_6._1.pdfIn PDF document text
    • http://zijipowatik.epizy.com/1001_arabian_nights_movie_free.pdfIn PDF document text
    • http://wiwekire.epizy.com/business_development_assistant_job_description_template.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/losobabimobajewibe.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/build_my_life_e.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/influenza_vaccine_vis_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/simple_biodata_format_for_job_fresher_doc.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_off0000c0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F0 5216 bytes
SHA-256: e6457cb60317e399a1aedcdbe7a290e928c00fe06bceb03e6be37c435358db89
font_01_sfnt_off0000d2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2BB 10648 bytes
SHA-256: e1babc080feea7033094208f10248015a352eec3c971969853ad533852e9c5ee

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