Malicious PDF — malware analysis report

Static analysis result for SHA-256 0182a532e367015e…

MALICIOUS

PDF

88.5 KB Created: 2021-03-20 20:10:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0798c8e69dc325407984761421cd9d12 SHA-1: 1176cfa6b3cec6ff4fa61f0000ab7473cbc39aaa SHA-256: 0182a532e367015e1e92346efc6850042044c8d723305567bacf6ea6bf7b45b4
156 Risk Score

Malware Insights

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

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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/strik?utm_term=cub+scout+bear+pdf PDF link annotation
    • http://wbigs.space/doena_de_chagas_forma_agudah7u2g.pdfIn PDF document text
    • http://operationhomeplate.com/rose_book_of_bible_charts_maps_and_t9iapj.pdfIn PDF document text
    • http://mybiol.site/zalebodanetorisilefoso4e3my.pdfIn PDF document text
    • http://shothard.site/jomofuxotatamgd0up.pdfIn PDF document text
    • http://vladmer.ru/175508650090ca8e.pdfIn PDF document text
    • http://opendouche.xyz/800480165702wbmb.pdfIn PDF document text
    • http://artyom.guru/chinnari_chinnari_chiluka_song_femalesiphv.pdfIn PDF document text
    • http://praktika-ingenieur.com/daxofafipawofaguwaraponf0nez.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/sobaketemu/score_hero_hacked_version_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/66096125493.pdfIn PDF document text
    • https://ba428ff1-d53d-4eb5-bdb2-cc960067f420.filesusr.com/ugd/7041e4_0aa18c83ece44b20acb9cd44dea9beff.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/how_to_apply_for_air_force_academy.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/beautiful_cute_baby_hd_images.pdfIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_3a72622a55fb46508ce74b2a8e79cf3f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muvarelo/jajamigami.pdfIn PDF document text
    • https://4b523d79-2bc6-404f-8e52-0acae4d2cb03.filesusr.com/ugd/fe1b41_3bb936eba20049bc82915e205e49f151.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/simujix/cv_template_word_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/django_templatedoesnotexist_source_does_not_exist.pdfIn PDF document text
    • https://be9c8297-50e9-4ec8-be22-7cc4068ef96a.filesusr.com/ugd/fc3b0b_dd2303e9359f4b8f9316a8bf02bbffcd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woberiz/mulodunixezone.pdfIn PDF document text
    • https://737bf953-b780-43bc-8af0-312ed5328a40.filesusr.com/ugd/017c44_d7ad3115fe2a45c8b8f05872e2cdec29.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pipaneku/caroline_bowen_articulation_screener_form.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_off00011eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EAC 5160 bytes
SHA-256: d8e78eb5c1c70021c4f9b4569e060e2b00aad2d811b9ce2ab524a639db005a3d
font_01_sfnt_off0001303a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1303A 10736 bytes
SHA-256: afee44597b34aaaac783a77f7d5d3b54ec84904b4ee98a3573c241d941b06d6b

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