Malicious PDF — malware analysis report

Static analysis result for SHA-256 71c8f0d491ce9ff9…

MALICIOUS

PDF

64.4 KB Created: 2021-02-09 08:44:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 6f7765e7ff462f0cfb40d0179b98d3c9 SHA-1: 6fbef8492ac79a81bef7a5bef824d4ead8433a69 SHA-256: 71c8f0d491ce9ff9bac290f53afc5e2ee62069cd3b96b68dd180af5edc5b6409
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website seemingly offering online video episodes. This is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery. No scripts were extracted, but the presence of multiple unknown URLs suggests a phishing or malware distribution attempt.

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://jacksth.ru/123?utm_term=kud+puklo+da+puklo+sve+epizode+online+za+gledanje+sezona+1 PDF link annotation
    • http://steelsho1.club/pokemon_mega_fire_red_download_pcw4a83.pdfIn PDF document text
    • http://blue-tick-central.com/twilight_new_moon_soundtrack_downloa36o3w.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/trastornos_alimenticios_monografiaiuocf.pdfIn PDF document text
    • http://centerbluebadge.com/975494387445sxao.pdfIn PDF document text
    • http://docita.fun/borgnakke__sonntag_fundamentals_of_thermodynamicskm1nq.pdfIn PDF document text
    • http://svarka-aurora.online/infinity_train_characters_tier_list5ajwg.pdfIn PDF document text
    • http://subbellassecret.com/27695418437pw3yh.pdfIn PDF document text
    • http://iwhite.space/98164937488o3xpb.pdfIn PDF document text
    • http://zesamoa.online/cen-_tech_digital_multimeter_98025_manual5dojz.pdfIn PDF document text
    • http://graatorama.fun/river_flows_in_you_original_piano_sheet_music_freef8lxm.pdfIn PDF document text
    • http://fruits-summer.fun/70845124209dakjc.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/biwuwukesazef/mutixamazasobuxizowofo.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/73641640712.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/69177150643.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/zexupagonodotuxojafafupa.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/bingo_dot_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/cuneiform_tagalog_slideshare.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/vewudagizat.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/balizokedasunipubofafopa.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/17069972473.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_off0000bd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD8B 5300 bytes
SHA-256: 69bac8a89d5a6b5055684adf7b5656ad667ae683c63e19e33ec79e0c1ddab646
font_01_sfnt_off0000cfc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC4 10264 bytes
SHA-256: e976b5d37ea322bdae23cf78bc4b9167c5a15faa542da2ee39a9e6a78bf54cbc

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