Malicious PDF — malware analysis report

Static analysis result for SHA-256 702593b8c151b515…

MALICIOUS

PDF

78.3 KB Created: 2021-03-27 23:29:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: bf35d2e946973600ac5988a5c14678b3 SHA-1: 52a3f0b9dcb1da20083e137bca59a79a30e37859 SHA-256: 702593b8c151b5152be6213e280af324d450c3a2f056cb3f5014b58225d5c4dd
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://kuzutuzo.ru/award?keyword=sentinels+of+the+multiverse+rpg+pdf PDF link annotation
    • http://jinokonur.22web.org/67839752592.pdfIn PDF document text
    • http://tifetatujuvib.22web.org/simple_man_shinedown_free_music.pdfIn PDF document text
    • http://molipetofokeva.22web.org/how_to_clean_window_air_conditioner_vents.pdfIn PDF document text
    • http://jakebaxujimug.22web.org/astral_pipe_price_list_2020.pdfIn PDF document text
    • http://wetepuzasuvuroz.22web.org/pandoc_markdown_to_html_template.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/bc18562f-0e36-4f91-a995-edf184298379/lizanuxufexavaruxiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b3325c6-f5d9-4b32-9a22-9bb9bd9b4a9b/melezosaworixiromesunenun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8730c64-38c2-479e-8ba3-bec423483dc5/persona_4_golden_social_link_guide_marie.pdfIn PDF document text
    • http://dedufaga.rf.gd/98017226445.pdfIn PDF document text
    • http://sobefukobit.rf.gd/kotovo.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/66148393480.pdfIn PDF document text
    • http://xenivut.epizy.com/12283172530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddee79b9-7b18-4e65-bf33-38b3f331a0b5/what_is_the_basc_3.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/instagram_apk_latest_version_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19152bde-ae7c-4200-850f-018dd3aff633/kefizosewofujeferutuwubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b16bb11-ebd1-4473-8236-4e95d9b2e655/sotekiririrepinuw.pdfIn PDF document text
    • http://dalotidel.epizy.com/52415456970.pdfIn PDF document text
    • http://fotoburiwolof.rf.gd/aspire_breeze_2_manual_espaol.pdfIn PDF document text
    • http://jifaradazuzigo.rf.gd/97969742605.pdfIn PDF document text
    • http://liwosajew.rf.gd/bagatelles_pour_un_massacre_cline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4581f1f-7a78-403a-9581-b18c25147ab1/25238985608.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/82059279757.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_off0000f3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CA 5408 bytes
SHA-256: f53cb829e80d2705605ba60dc6b311b208ad77661752f79ed6f540301b69527f
font_01_sfnt_off0001060f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060F 11076 bytes
SHA-256: 2463b98c4d8c32fd7b583d2a386099ca5c0c3197d8522c16d559afd3012b3dc1

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