Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e11767d7f4b2e5…

MALICIOUS

PDF

88.1 KB Created: 2021-03-20 09:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f32c6180392cdcb6b7e1d361416f186 SHA-1: 2466a3b1e20ac50c64e7ca703cdb5b08b95c47ab SHA-256: f1e11767d7f4b2e5a7132b09aeb0aed0b5a9dc138075a771a30907b3be679458
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://ponafet.ru/wix?keyword=line+rider+3+unblocked', which is likely a lure to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests it is a document rather than a direct exploit, aligning with a phishing or social engineering attack vector.

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
  • 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://ponafet.ru/wix?keyword=line+rider+3+unblocked
    • https://cdn-cms.f-static.net/uploads/4407986/normal_601855880e873.pdf
    • http://pro-gram.pro/3614379819a6eta.pdf
    • http://monongzhlh.space/distributing_and_combining_like_terms_worksheets6otno.pdf
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5fecefa442857.pdf
    • http://cabinetshub.xyz/39142790174titdv.pdf
    • http://vanlit.ru/646398857491q1b.pdf
    • https://cdn-cms.f-static.net/uploads/4481168/normal_603eb979c23d3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dususawikupap.epizy.com/namestie_svatej_alzbety.pdf
    • https://f187853a-68e6-4ed6-a420-9593b89d6738.filesusr.com/ugd/27c34a_b747a958f10b483eaed24d0cc97fb35e.pdf?index=true
    • https://s3.amazonaws.com/gofilafixu/tizonumotaweke.pdf
    • https://edcb5511-827b-40b0-97c1-3499c313f96b.filesusr.com/ugd/0779a3_b67af314e7804702bf110490d65d34f2.pdf?index=true
    • https://9370005b-87d8-49d8-b27c-18dce193a2f1.filesusr.com/ugd/52ea04_36cb05b7df95488f996cd6186cb3f4e5.pdf?index=true
    • http://benifolagalat.epizy.com/certificate_of_origin_form_b_indonesia.pdf
    • https://ebed6276-6372-4ddf-adad-9a0fa504b99f.filesusr.com/ugd/805d2a_36c24e5eefa8450bb61963e5291a689b.pdf?index=true
    • https://s3.amazonaws.com/gebukil/zewaxalakarezexoboziluwex.pdf
    • http://fakeloj.rf.gd/articulos_cientificos_de_nutricion_deportiva.pdf
    • https://78bdfa25-736e-4945-a764-db21511aacb9.filesusr.com/ugd/9bd82e_0a6de91b3a444fc2b74b07372062f08d.pdf?index=true
    • http://rusiwebo.epizy.com/wuketurijavi.pdf
    • http://koxunum.epizy.com/nakorimolokati.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118a8.bin
dd9f261c7a9ba05e804380a7d22f2cab196fa21518f683dde74901e3900ba781
pdf-font-stream PDF embedded font (sfnt) at offset 0x118A8 4852 bytes
font_01_sfnt_off00012941.bin
5fe6e9aba9a724f3a7651f4760f4944bee1f3b54b18468c6c29c9ad724ac90ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x12941 12688 bytes