Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c46a3ad53974e30…

MALICIOUS

PDF

172.9 KB Created: 2021-03-23 20:05:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 30690e2edac08abe7f86d6d06b8847db SHA-1: 780bc51aa5f8b022b06729b5d69fadd88ba2b6f6 SHA-256: 7c46a3ad53974e30ae52f75ba72a3100912482da6492f9d941b2bef67bb3ce07
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URIs, with one specifically pointing to a phishing domain. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of external URIs and the link farm heuristic suggest the document is designed to redirect users to malicious or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pelibifir.ru/strik?utm_term=is+persona+4+golden+on+pc PDF link annotation
    • http://mjawebdesign.net/increase_audio_buffer_size_windows_10tzivm.pdfIn PDF document text
    • https://fubuzupa.weebly.com/uploads/1/3/5/3/135324320/kirap.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/iiicGan/88257908983.pdfIn PDF document text
    • http://silkhfig.bid/napodavafg4w2s.pdfIn PDF document text
    • https://xajaxosu.weebly.com/uploads/1/3/5/3/135304217/binupakizexo.pdfIn PDF document text
    • https://boxesagako.weebly.com/uploads/1/3/4/5/134589877/5740466.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/ibqhfic/90150378259.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/burger_king_august_2020.pdfIn PDF document text
    • http://geniusenglish.space/pokemon_sapphire_roms_free_downloadjpjz5.pdfIn PDF document text
    • http://myluckywin.site/domilutidojovoladinanuasp0w.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/h4n_pro_vs_h5_vs_h6.pdfIn PDF document text
    • https://cdn.sqhk.co/depadukat/Jhmidjh/65023503593.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/nademopor/gadetorisidozikeziti.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/betemoliwabimekotu.pdfIn PDF document text
    • http://jujageritoxo.atwebpages.com/gudofojigunideluxeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cce5899-604d-49de-8d72-e5a18c081a9a/imaginative_vs_realistic.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/notepad_sql_formatter_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b90bf27-2d9a-41d7-8742-81e39a68643d/61880618748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9773103f-7f86-4013-ba98-f285d8f270f8/twilight_saga_2011_full_movie_in_hindi_download_filmyzilla.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/tufukapuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cab24a4-6b36-45a5-b80d-5b0eb5401d20/how_to_play_just_dance_2020_on_ps4_with_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/389ea1c3-5591-4cba-b8b6-efa4e26b0b37/12445557004.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/13454112489.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_off0001e7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E7F0 42500 bytes
SHA-256: 8ace80d01c6b0c779805d7083ed194a6d19152403677b81db6a75b248e73e64a
font_01_sfnt_off00026ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26AE0 5264 bytes
SHA-256: 7f56ca9abb147d7620279f4f9a51ff9658eab67725ad73140559dbe395830f07
font_02_sfnt_off00027cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27CDA 11892 bytes
SHA-256: e8a63b531d2eb349843af159fa24b653f9cb409901acd036db7c6a7e48a774a8

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