Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08d5afa06654bb2…

MALICIOUS

PDF

78.0 KB Created: 2021-02-17 02:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a6ce2cf6b7b4dafdbb457e2f31954093 SHA-1: 796f0a82037b03c1748bebd87d1f07b06e6b09b3 SHA-256: d08d5afa06654bb2d06e5f3548695a38876b8fdfa5e48ccf53addaa7609ac28f
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirector infrastructure and link farms. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were extracted, the PDF structure itself facilitates the redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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.
  • 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://yafferge.ru/strik?utm_term=what+is+the+easiest+forex+strategy In PDF document text
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/c41825.pdfIn PDF document text
    • https://nixujukasal.weebly.com/uploads/1/3/1/6/131636737/nilarojo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444113/normal_602600a66230c.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/b7Q1Lib/91066845744.pdfIn PDF document text
    • https://wojawiso.weebly.com/uploads/1/3/0/8/130813991/387d7c7ad200090.pdfIn PDF document text
    • https://baboxubawuxi.weebly.com/uploads/1/3/4/6/134666135/9039330.pdfIn PDF document text
    • https://cdn.sqhk.co/kinerufi/LgdCilq/photo_collage_ideas_for_mom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491173/normal_6009a3d59677c.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/tirimofufemukat/dabbe_cin_arpmasi_2013_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/microsoft_office_2016_setup_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/antivirus_free_for_windows_10_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/29144929400.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/37817143965.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/atom_launcher_paid_apk.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_off0000f44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44E 5180 bytes
SHA-256: d6113b0b335b450d0322c6805b9c963ef44682dfd9650e4ed20cf95dacd53bd9
font_01_sfnt_off00010607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10607 10944 bytes
SHA-256: 4e2a376a5e86d1cf032df37930c5e9568618908f382350dccf7b0cdb894ee915

Open this report in the interactive analyzer, or submit your own file for analysis.