Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61b122e99f0ba46…

MALICIOUS

PDF

73.3 KB Created: 2021-01-14 23:30:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6a29eb6caa45d1e8c1c336b0f5dd0c04 SHA-1: eeb5389833f7c9b426487b7dd427a951ddbcb160 SHA-256: c61b122e99f0ba46c8703a46a8e18dce6b4cc5f6b273b8f6de071fdbe9d43af8
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ggtraff.ru/123?utm_term=menards+patio+furniture+reviews' is the primary indicator of this malicious redirection. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to lure the user to a harmful site, likely as part of a phishing campaign or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=menards+patio+furniture+reviews In PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/hi8hejd/najepe.pdfIn PDF document text
    • https://site-1175456.mozfiles.com/files/1175456/xedopagukure.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/c98iecQ/32681764077.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/wesezuzuvalirik/meters_to_feet_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/obtener_coordenadas_utm_google_maps_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/free_presentation_slide_design_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/descargar_beamng_drive_gratis_para_android.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/mumexegipivofopajurivese.pdfIn PDF document text
    • https://s3.amazonaws.com/juxatop/56962037243.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/zigenedizekifemuwavof.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/scratch_2._0_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/25451860153.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/voces_de_hispanoamerica_5th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/47153388057.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_off0000d432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD432 5040 bytes
SHA-256: bf661e4ffb766f11abc2315850fdbaae347f803cf298b5b1fdb9e8eccb0b72ed
font_01_sfnt_off0000e579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE579 10888 bytes
SHA-256: 44dbe4cb0bdf9d9d24ea678d98f15aec1c2588a448019ff1fa907cf387285ffb
font_02_sfnt_off00010a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A76 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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