Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4134e7075dc0de…

MALICIOUS

PDF

71.5 KB Created: 2021-02-18 15:54:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9b692a79f293da6126273662effe74c9 SHA-1: b4335060ab5790c888e71b6d63ffac1133eb69e2 SHA-256: 2b4134e7075dc0dec009902874c2907a810c10449830419e36223d8c05107dc9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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.
  • 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://crophysi.ru/wix?keyword=bruce+lee+pdf+libro In PDF document text
    • http://fruit-citrus.space/how_tall_are_attack_on_titan_characterss37m9.pdfIn PDF document text
    • http://tohld.in/47884936049kowle.pdfIn PDF document text
    • http://rezonansmusic.com/maraletirojuj3det2.pdfIn PDF document text
    • http://sandiego-podcasts.com/creative_thinking_notesg86dv.pdfIn PDF document text
    • http://pycnidwzxc.info/44945690027byrnc.pdfIn PDF document text
    • https://cdn.sqhk.co/posaleren/hagjhaF/dajizafowugoreluwave.pdfIn PDF document text
    • http://sfr-webmail.com/jezipuwetolanegofaef0.pdfIn PDF document text
    • http://trendmobile.ru/how_to_install_aprilaire_500_humidifiervwzd1.pdfIn PDF document text
    • https://cdn.sqhk.co/jozazixefuf/S8ZjfXO/62818222203.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/6840017957belax.pdfIn PDF document text
    • http://christinaanddavid2019.com/dugatemajo6z4r0.pdfIn PDF document text
    • http://smartcreditus.info/dikejozuduxavipaja528y.pdfIn PDF document text
    • https://domaruvujus.weebly.com/uploads/1/3/2/6/132683142/muvebugevibev-lamulemonikom.pdfIn PDF document text
    • http://probmake12.xyz/67268929498a98sb.pdfIn PDF document text
    • https://noruwapawufibem.weebly.com/uploads/1/3/0/9/130969999/zefevajepad.pdfIn PDF document text
    • https://kukiramofup.weebly.com/uploads/1/3/1/4/131413837/3634400b689bf58.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/mivokozibu/bokajonisimodusomosaxul.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/wow_classic_leveling_guide_horde_reddit.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_off0000dd97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD97 4948 bytes
SHA-256: 16a3a6b2e2328b920a0f5f44b66c35fac700dc09c51a378c9492e119f4dae9d5
font_01_sfnt_off0000ee7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7C 10264 bytes
SHA-256: 6e8e024ccc6fa8c2921c020a02df3f80ae686094834d7b4d87e799f9e9351744