Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14d405e6fc748e2…

MALICIOUS

PDF

83.8 KB Created: 2021-04-05 07:08:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4d8733f69575d71a5700a220cd0fa13e SHA-1: 1686fc5b9ee55336b4316169606ba961e6237941 SHA-256: e14d405e6fc748e24b858b5078d3d4899151e3da7e7b80cca8010bc4febd934e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/strik?utm_term=was+it+a+dream+30+seconds+to+mars+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C PDF link annotation
    • http://soinjaga.ru/37923599541k9rax.pdfIn PDF document text
    • http://callipakk2.site/kojokalufitidhyth6.pdfIn PDF document text
    • http://dmgameplan.com/dell_p2415q_4k_monitory6b49.pdfIn PDF document text
    • https://cdn.sqhk.co/sitopizol/OlhghfC/nail_it_meaning_in_tamil.pdfIn PDF document text
    • http://gayerkan.com/bajirao_mastani_full_movie_with_english_subtitles_123movies0ckhk.pdfIn PDF document text
    • http://detonicro.website/barimagepw69db.pdfIn PDF document text
    • https://pifelitasa.weebly.com/uploads/1/3/5/3/135350032/jufatisiluwob.pdfIn PDF document text
    • https://cdn.sqhk.co/tubadaluzafu/hiDN7gj/titanoforajonalisif.pdfIn PDF document text
    • http://fastpysystem.online/koginasues3z.pdfIn PDF document text
    • http://fb-ig-copyright.com/accelerated_reader_ar_quiz_answersd44d9.pdfIn PDF document text
    • http://leree4.club/which_river_crosses_tropic_of_cancer_in_indiajxns9.pdfIn PDF document text
    • https://bageriwiko.weebly.com/uploads/1/3/2/8/132814239/1362689.pdfIn PDF document text
    • http://mebelintera.ru/dendritic_drainage_patternkgrh9.pdfIn PDF document text
    • http://airned.ru/aircare_ep9_800_digital_whole-house_pedestal-style_evaporative_humidifierh9q8z.pdfIn PDF document text
    • http://ital-tess.space/bukowevakuwomomotebzu9y9.pdfIn PDF document text
    • http://tronreserve.online/deborozokurunopesemide1ewn9.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/gfijjh8/psoriasis_symptoms_images.pdfIn PDF document text
    • http://gramnews.xyz/sijakegudifedidifugefekoa9csj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xiwozoget.atwebpages.com/jersey_mikes_menu_mikes_way.pdfIn PDF document text
    • http://polilofu.onlinewebshop.net/personal_pronouns_spanish_worksheet.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_off0000e96e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96E 5792 bytes
SHA-256: 9b1f200a6e569f5ed6b3823f86421888d0f7c295b947123ce8ef9a16251e13aa
font_01_sfnt_off0000fc24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC24 18712 bytes
SHA-256: 2db796b37625231c4f799a115663a187bfc322d379a46a313cb79488d1825bd4
font_02_sfnt_off000130f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130F5 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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