Malicious PDF — malware analysis report

Static analysis result for SHA-256 472a9bb8c667aaf7…

MALICIOUS

PDF

83.3 KB Created: 2021-04-28 10:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6229256c0a7d25271354255efe56ae2f SHA-1: ebaab54a3c3d7250ce445df1866e5a4175f4bee6 SHA-256: 472a9bb8c667aaf7c4b8b1fb653e1facf0c11cb343f2c3d5d79daa54dc17def3
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by 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 0.9991

Heuristics 4

  • 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://soxebez.ru/strik?utm_term=what+order+to+read+the+avatar+comics+in PDF link annotation
    • http://puwexakibo.iblogger.org/banjara_video_song_number_padal_ing.pdfIn PDF document text
    • https://cdn.sqhk.co/vorinugobol/j3KO0ia/62745078400.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/453661663675absf.pdfIn PDF document text
    • https://cdn.sqhk.co/gatezoru/ii3iajf/best_games_of_2020_so_far_pc.pdfIn PDF document text
    • https://nafejodibema.weebly.com/uploads/1/3/4/3/134318188/dofaveserelom.pdfIn PDF document text
    • https://ribovaboj.weebly.com/uploads/1/3/0/7/130775049/8716702.pdfIn PDF document text
    • https://jogabaxeke.weebly.com/uploads/1/3/4/7/134704809/7121918.pdfIn PDF document text
    • http://phillipen.online/lurilibkww0.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/db4jjhb/jotepokabojoxazugezelije.pdfIn PDF document text
    • https://cdn.sqhk.co/luwukamuku/xGijzdE/photography_scenery_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/gisefezuzif/aTtKHFe/overdox_weapon_guide.pdfIn PDF document text
    • https://nutuvujupakumap.weebly.com/uploads/1/3/2/7/132740288/wipasazo_mabuzodazigumas.pdfIn PDF document text
    • https://pexarokozisakim.weebly.com/uploads/1/3/5/3/135313666/xisezugigez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zumaruzafomadik.rf.gd/antiparallel_beta_sheets.pdfIn PDF document text
    • http://jekogowe.epizy.com/panasonic_es-la63-s_arc4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41eb2d78-2ef1-41a0-bada-704faeead067/20984923822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0e61325-861b-4f80-a7a9-5924eefe439d/what_are_some_persuasive_writing_techniques.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b4ec88a-53bb-45b4-b7dc-caadf1df8b2d/15151327384.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/wuralevidimugima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0c98dec-79ad-4af3-b36f-40ea3edb8f55/39916823911.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/63404672856.pdfIn PDF document text
    • http://xobiluwova.epizy.com/aha_bls_provider_manual_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/sasugewajosad.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/kugogipe.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_off0001091f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091F 5220 bytes
SHA-256: 7607cb854cf0d181de408a9add52f5d232bee3d8a6c3dcad7feb911a0adae534
font_01_sfnt_off00011ac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AC4 10592 bytes
SHA-256: 27d3141359c08901f22bd8cb189c0d251cf8e99b970048177300937d52bc7a2f

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