Malicious PDF — malware analysis report

Static analysis result for SHA-256 905787574b680439…

MALICIOUS

PDF

72.4 KB Created: 2021-02-23 06:13:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 752c2eed4e6eb1a86b7fac67cb94bc7a SHA-1: 68fd61aefcf262ddaac8c3aa28dd2eb40b704daf SHA-256: 905787574b680439176f0fe348b5933a4d7593e487f06f89780d783ed3ef3d05
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wix?keyword=clash+royale+hack+apk+download+iphone PDF link annotation
    • https://juzubuju.weebly.com/uploads/1/3/4/7/134703155/66c5b77f31e9f1.pdfIn PDF document text
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/zowup.pdfIn PDF document text
    • http://retys.space/pokemon_revolution_rock_climbi45f9.pdfIn PDF document text
    • http://presentinsta.site/alimentacion_sana_y_equilibradainux7.pdfIn PDF document text
    • http://nimidarizul.22web.org/gym_cancellation_email_template.pdfIn PDF document text
    • https://nenatuver.weebly.com/uploads/1/3/4/0/134017756/3648876.pdfIn PDF document text
    • http://creditreportus.info/how_to_be_an_amazon_writer62g7d.pdfIn PDF document text
    • https://begagezegitajaj.weebly.com/uploads/1/3/1/3/131398046/vofamolo.pdfIn PDF document text
    • https://wakukorukizine.weebly.com/uploads/1/3/2/7/132712206/dakonobumudote_zefozum_buzodidepaxo.pdfIn PDF document text
    • https://jexafowasefuxuv.weebly.com/uploads/1/3/4/5/134588667/8f03ffe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377908/normal_5ff59bc556bdd.pdfIn PDF document text
    • https://palisuxil.weebly.com/uploads/1/3/1/0/131071308/pibiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/lembaga_arbitrase.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/64214221286.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/bike_race_hack_ios.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_off0000dbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD6 5324 bytes
SHA-256: 546c106ce017f030bee1dadebc0fdb67753307a11f3844bf5bf7991c9050babb
font_01_sfnt_off0000edfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFE 11504 bytes
SHA-256: 01f44d3dcf5667c0c2d72ebc9d3ed76f7d3464e57aa710b9c28f484f1fa5475d