Malicious PDF — malware analysis report

Static analysis result for SHA-256 95070952584e51fa…

MALICIOUS

PDF

77.8 KB Created: 2021-02-27 02:18:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 38481104b73ac1d5acf0016fbf420bf0 SHA-1: 753d02b29bbcc2bb5cc2767562716f0eadd9cf8c SHA-256: 95070952584e51fa702a07da3780fdf6267e3837f0b40e36257f4450f545e3ea
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a large number of external links, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://vilenefex.ru/strik?utm_term=etymological+dictionary+of+latin PDF link annotation
    • https://kokujefep.weebly.com/uploads/1/3/1/4/131409677/sarape.pdfIn PDF document text
    • https://fadefufogu.weebly.com/uploads/1/3/5/9/135960472/13805e37f81e8b.pdfIn PDF document text
    • https://jinabotulopel.weebly.com/uploads/1/3/4/6/134602701/xetijizivufavebuk.pdfIn PDF document text
    • https://zalivibutadugaf.weebly.com/uploads/1/3/5/3/135391941/fidowopikixam-zukor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498842/normal_5fe3b805c112c.pdfIn PDF document text
    • https://rarerosedipise.weebly.com/uploads/1/3/4/8/134876587/2700102.pdfIn PDF document text
    • https://mabavelege.weebly.com/uploads/1/3/0/7/130775551/gebapoz.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/HHAigij/republique_bananiere_definition_en_arabe.pdfIn PDF document text
    • http://honey-love.ru/nissan_forklift_mcp1f2a25lv_parts_manual9pp96.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/xid41id/galaxy_s9_live_wallpaper_port.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445119/normal_5fe4eff459478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479237/normal_6019c04612007.pdfIn PDF document text
    • https://juwibaviwexufeb.weebly.com/uploads/1/3/0/7/130739975/tosawunesedulog.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://s3.amazonaws.com/werowibovezoje/photography_website_templates_themeforest.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/39756299540.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/jopepub.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/rockstar_games_social_club_free_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/codecademy_sql_table_transformation.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_off0000e773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE773 4892 bytes
SHA-256: 2a534e9b0ed8fccab9bd561047566addd99dbb4a1031ce1df6852a915284ac1d
font_01_sfnt_off0000f7fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FC 10528 bytes
SHA-256: 37949ac168fbd0a0c7013469844af9f5e60d9494f9dcac31e0f5c2df1bc409da
font_02_sfnt_off00011c0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C0F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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