Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ef166674c44417…

MALICIOUS

PDF

70.6 KB Created: 2021-04-16 05:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c763ab8aa3cbff807d8126649ad98ece SHA-1: 9ea1c23ab8d0fcc82799c53d9360b653966bc54d SHA-256: 12ef166674c44417e14267d170a7c583c088ebf2d71773db8d7a56c8a0dcd46d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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://dugedepap.ru/strik?utm_term=el+poder+de+la+mujer+que+ora+libro+de+oraciones+pdf PDF link annotation
    • http://usacreditcheck.info/pevaxupvtml.pdfIn PDF document text
    • http://mybatut.store/xetekajodalukipuhwsco.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/Pd6ihjd/my_talking_animal_apps.pdfIn PDF document text
    • http://air-calm2.club/422758594278xs6x.pdfIn PDF document text
    • http://sfhgfje5df.xyz/the_meaning_of_marriage_devotional1l3sj.pdfIn PDF document text
    • https://cdn.sqhk.co/vubiwete/if35mih/13908329126.pdfIn PDF document text
    • http://mitsumoro.ru/rigekulilitufibazzmppz.pdfIn PDF document text
    • http://ketadiets.site/12335950544zt5pv.pdfIn PDF document text
    • https://cdn.sqhk.co/wikelere/hxjcgfO/47769455160.pdfIn PDF document text
    • http://neo-tp.ru/is_big_fish_games_legittb3xu.pdfIn PDF document text
    • http://load-bcp.com/how_to_fix_tablet_charger_portzx7gx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jagodadevigusef.rf.gd/xarugigivibur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2eeede6-39f3-48e1-8d4f-123a498d2b90/pemepasiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4515b0dd-8da9-4712-8941-f2f211615e60/47014354667.pdfIn PDF document text
    • https://5c71d6b4-13b5-43a2-97a4-9a0eba4d0f4d.filesusr.com/ugd/0f1814_223523ca74d44410b44e7b49df30b006.pdf?index=trueIn PDF document text
    • https://661c91a2-68a2-4ae3-aaac-ef96b6cc7894.filesusr.com/ugd/b926a8_6b6d5282e8f64b8ab3191915e6969d08.pdf?index=trueIn PDF document text
    • http://lisokabosexipep.epizy.com/ganpati_aarti_telugu_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5afefc05-6729-40fb-a3fc-f97f0db4b742/wetosuzeni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca488f97-9a8c-4502-b4af-1b9ad069bbeb/lesoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01bbe3a5-0c8f-4fd0-8679-c89c92c4d414/best_penny_stocks_to_buy_in_india_for_long_term_2020.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_off0000d35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35F 5600 bytes
SHA-256: 4c845ab1a1e6adb9e45d59f0549065319d0791eea13637c40eca2d67d42b70c5
font_01_sfnt_off0000e64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64E 11104 bytes
SHA-256: 552dadddbe339d764c2b12b7221fe6596af3de3f37408f2dee428462972c81ca

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