Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72b80206f24dd64…

MALICIOUS

PDF

72.4 KB Created: 2020-12-15 05:17:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 32c1748319994ea001842b989b931ad9 SHA-1: 35e509f86ab24bc37514fd2b98de4fbc9566970b SHA-256: e72b80206f24dd641a49f9ee1b2cc8cf525a579a05af3d08204966f9f13b4b8e
156 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 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 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.
  • 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://traffine.ru/123?utm_term=gta+5+online+infinite+money+glitch+2020+april PDF link annotation
    • https://guburumo.weebly.com/uploads/1/3/4/3/134322172/25f5a.pdfIn PDF document text
    • https://neboxikadifi.weebly.com/uploads/1/3/4/5/134588308/maworodolave-xigugofubo.pdfIn PDF document text
    • https://tedawubav.weebly.com/uploads/1/3/4/3/134376018/kinileketevorizat.pdfIn PDF document text
    • https://jegokama.weebly.com/uploads/1/3/4/6/134651242/9982638.pdfIn PDF document text
    • https://raxeruzuk.weebly.com/uploads/1/3/4/7/134743740/6975ea46d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc0c991c6d9645836219624/t/5fc648644f98375720b4b66e/1606830180984/remizikikaloxo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f79e2e34347c7044618a/t/5fc1bc42173fb5383be36d40/1606532163250/40263046899.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28db48787e87989768336/t/5fc9d1b585627875175c307e/1607061943105/world_football_league_rankings_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/solving_equations_grade_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eeec4c3-ec9e-41c5-bf7f-139193397366/fofusig.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c3b35bcb0228a29b3dce/t/5fd16c8cc10336458b2b2672/1607560332433/can_we_apply_paint_on_sunmica.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f8dcc6229360ecad579d/t/5fc931e8770c1f22ae345b49/1607021033869/general_gau_chicken_calories.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f6c4e5c7695ca99bf722/t/5fcfb00b05f6f27807656c02/1607446540474/novixowopununevogo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fd9af9866f3fd2d4d777/t/5fc2b85a1972c46e3cf7a0ec/1606596699119/ganumenijapivunoribome.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ff9227a199023ab5e001/t/5fc6ce130791337046d0a896/1606864403777/analisis_matriz_foda_ejemplos.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD120 5568 bytes
SHA-256: d11cb68b2a29d870414fe97d161f57a9c5987964791527584aeef3f99b81bb17
font_01_sfnt_off0000e3fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FB 10096 bytes
SHA-256: 462c2ccce33c35574da1dabcdd271bbe86dcb7f10ff9100eed61800e7906843c
font_02_sfnt_off00010686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10686 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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