Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba9ca993bdf0c25…

MALICIOUS

PDF

75.3 KB Created: 2021-04-03 10:30:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b3a63b9a48b99c1693804d8a6ff7c1bc SHA-1: 56af3aa8126693f7da4902bb4129015919f265cf SHA-256: eba9ca993bdf0c250594e144da3723edd6ebd017d36cafcf96016d795830a401
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=filtrete+thermostat+3m-50+manual PDF link annotation
    • http://popisazono.getenjoyment.net/82118397945.pdfIn PDF document text
    • http://websporizle3.com/xajuxisekebedinitata9n3o.pdfIn PDF document text
    • http://afracheat7.xyz/asbestos_sheet_ratejvnlg.pdfIn PDF document text
    • http://sokixatov.mywebcommunity.org/catalogo_hinode_dezembro_2020.pdfIn PDF document text
    • http://gavokofubafixi.getenjoyment.net/53184801858.pdfIn PDF document text
    • http://mjawebdesign.net/rorikalefanilowa272c1.pdfIn PDF document text
    • http://wowitaly.space/naija_afro_beats_instrumentalt5rpb.pdfIn PDF document text
    • http://copyrightreports.com/gapudigiwavovuor08a.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/jebhj5O/98554043578.pdfIn PDF document text
    • http://rupiwot.getenjoyment.net/gidefazinuki.pdfIn PDF document text
    • http://nnorm-id.com/harrisons_principles_of_internal_medicine_19e_citation4b4vt.pdfIn PDF document text
    • https://cdn.sqhk.co/ketejeti/Lhaihj4/eddie_jungle_world_adventureland.pdfIn PDF document text
    • http://romeoplanet.club/dj_lucky_song_lyrics_hey_brokudau.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/hoiahiw/naterojimivuduku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0027e1f6-d8c6-4cb1-a0dd-eb20c3c4c413/nintendo_lite_price_in_india.pdfIn PDF document text
    • https://ab2ac9d4-4772-4872-829d-c19fde0a4f90.filesusr.com/ugd/b919b3_345a8619e5664aaea2c1b1d242767bd5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a377acb-c77f-4b91-89aa-eb726770f6a2/amsco_ap_world_history_modern_answer_key.pdfIn PDF document text
    • https://a68e2ff5-bf17-48e3-82d4-ceb975b85758.filesusr.com/ugd/760101_c781b3a61dfd436b8adc06f7cb74ad79.pdf?index=trueIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_1183442bb92947febcaf58050af4f929.pdf?index=trueIn 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_off0000e7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F4 5344 bytes
SHA-256: 805d9e61f6b2fe2d6d93db7de7388c0582904aa8790782936ae0354761b99510
font_01_sfnt_off0000f9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F4 11068 bytes
SHA-256: 54cb52aaa1b2f0faee1dc2ca7d3f6300dd24b31038085190048ac793cece93f9

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