Malicious PDF — malware analysis report

Static analysis result for SHA-256 18f58cbbea439255…

MALICIOUS

PDF

68.2 KB Created: 2021-03-11 00:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ee8c244e7b374dcc9952eafa16319886 SHA-1: 990767407401f277bde56a9fc9834ae470174f0b SHA-256: 18f58cbbea43925546e9bfc941c248d0a6df1baae7ff7e830e08d21db0f1bfba
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://lozipotod.ru/award?keyword=pdf+converter+to+word+free+download+cnet PDF link annotation
    • https://xezamojukugenu.weebly.com/uploads/1/3/5/3/135316948/wezufemagutikimu.pdfIn PDF document text
    • https://xawavefite.weebly.com/uploads/1/3/4/6/134667803/nibupewodowizawux.pdfIn PDF document text
    • https://dotuxebi.weebly.com/uploads/1/3/1/4/131454754/6491051.pdfIn PDF document text
    • http://loveworld.club/how_to_connect_my_fios_voice_remote_to_my_tvsmija.pdfIn PDF document text
    • https://gokebapin.weebly.com/uploads/1/3/5/3/135320588/74e488acf632c8.pdfIn PDF document text
    • https://zobezefifoluza.weebly.com/uploads/1/3/5/3/135306737/998720db.pdfIn PDF document text
    • http://sungo1.space/hhr_service_manual8dl21.pdfIn PDF document text
    • https://xibixijuli.weebly.com/uploads/1/3/5/3/135399677/1966297.pdfIn PDF document text
    • http://meetly.space/the_beatles_anthology_dvde4ag4.pdfIn PDF document text
    • http://dkmz2.club/ram_bhagwan_photo_imagesv2qhm.pdfIn PDF document text
    • http://sportplays.ru/vajiguniwapeziwazibod8sld.pdfIn PDF document text
    • http://dmgameplan.com/essence_silver_glitter_show_eyeshadow_palettek39im.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://748f1d53-d141-46c1-926a-d14fc69713a3.filesusr.com/ugd/e3ed1f_9e03fea2971c4b64b379596c18466a03.pdf?index=trueIn PDF document text
    • https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_1b22661eb05e4f47a23b13469063f613.pdf?index=trueIn PDF document text
    • https://51da6a7d-ee05-4a49-87ee-1b74af3aeb07.filesusr.com/ugd/b80405_735b9809d0ce4e12816afc0aa8763484.pdf?index=trueIn PDF document text
    • https://c1bbde11-5cda-4f7c-8b74-b2fe90b484f5.filesusr.com/ugd/1c8c6c_841255560a0e43eaace756b0f75a127e.pdf?index=trueIn PDF document text
    • https://db532842-334f-4efb-8993-e67ec8f20ff5.filesusr.com/ugd/bc5be3_52025ba414884779a80c8d2de9feda46.pdf?index=trueIn PDF document text
    • https://1a441fb4-51dd-4528-a053-eb59ff664e18.filesusr.com/ugd/43d9d5_6362c773478b48a6a5d7075faa866ad2.pdf?index=trueIn PDF document text
    • https://8ac5c8e1-9174-427d-95c2-90bebb9f105a.filesusr.com/ugd/44b221_7dd1b02d108b499d94c1b75a9214161b.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_off0000cfe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE4 4992 bytes
SHA-256: 117f18bd7d0d244ebf618dfec117c4436a72055649cfe51004045542cda38a9a
font_01_sfnt_off0000e108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE108 10100 bytes
SHA-256: cde408fff8bb8868cc932d5ca40dccf16c4488cf01219f221a28d920c22079be

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