Malicious PDF — malware analysis report

Static analysis result for SHA-256 e119ce97c5ef14ab…

MALICIOUS

PDF

68.9 KB Created: 2021-03-16 09:22:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 7fe9580df11417c120371f2a0ee70aca SHA-1: e2e68cdc098362108ac1d0fcffcaaad1778b7fe4 SHA-256: e119ce97c5ef14abf63b4af63de3718eb669896afe50c7ed7b9442c59775db36
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/award?keyword=handbook+excipientes+farmaceuticos+pdf PDF link annotation
    • http://xodaxedepapopox.mygamesonline.org/16463480052.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/85582296057.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/b1ieRjg/tibegewakamamakekudirowi.pdfIn PDF document text
    • http://vizilirudigub.getenjoyment.net/6890113488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500187/normal_602e0133a1431.pdfIn PDF document text
    • http://midesamipazizuj.scienceontheweb.net/29633442750.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425501/normal_5ffccc2a8b079.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417137/normal_5fd0e9936fb6e.pdfIn PDF document text
    • http://fuvidevifa.scienceontheweb.net/blheli_30a_esc_programming.pdfIn PDF document text
    • https://cdn.sqhk.co/lofesaxudiwo/toJgidw/never_gone_chinese_drama_2016_eng_sub.pdfIn PDF document text
    • https://cdn.sqhk.co/pibepufas/igiid2r/89809658237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420776/normal_5fe8919bd6b27.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/vasofirida/fleetwood_town_away_ground_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/xujonufemoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10b54310-ffda-44ea-a4da-5c9a15ae4eef/cuanto_tiempo_dura_ataque_de_gota.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/baidu_browser_media_er_extension.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acb8d22c-60fa-41e5-a933-0812b1acc7ae/miller_syncrowave_180_sd_tig_torch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44174ad2-192d-402b-bba8-602d7a2c0037/53362561659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c4ac5b-b666-4807-908a-474b232dc475/top_biochemistry_books_for_medical_students.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/ffbe_carbuncle_3_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e274a03c-fa3e-43e7-ae62-344bb52baf3f/focusrite_scarlett_2i4_software_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/christmas_vocabulary_worksheets_for_esl_students.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_off0000d0b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B7 5500 bytes
SHA-256: 8321a17312957e3930bd36d3e1612178ab7031d9ac0de1d4c732f1e5c540c0ab
font_01_sfnt_off0000e358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE358 10276 bytes
SHA-256: a99cacca31c88564e187330c9581916764e535fb9860233cba8c51e30ffb9519

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