Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd1b5f3f5abbfeb5…

MALICIOUS

PDF

79.6 KB Created: 2021-04-06 11:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45c1f91b744daea8bf871eb053543f6e SHA-1: 5d9912aa4663fc22215c3a75be88f85100938c53 SHA-256: fd1b5f3f5abbfeb572f68684888342715faba5188f9ccf15ab689bce31a4fbd1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/strik?utm_term=tc+electronic+flashback+x4+power
    • http://vamolufu.getenjoyment.net/26717892203.pdf
    • https://cdn-cms.f-static.net/uploads/4366063/normal_601153be032c4.pdf
    • https://cdn-cms.f-static.net/uploads/4393035/normal_6026607764aa1.pdf
    • http://it50disconto.pro/what_values_are_reflected_in_your_daily_activitiesm2o59.pdf
    • https://cdn.sqhk.co/ludibipimilu/vgj6vhe/69804582254.pdf
    • https://cdn.sqhk.co/wunokebewoz/trD8jbP/zoresipoduxu.pdf
    • http://benilobodereji.mygamesonline.org/1997_yamaha_timberwolf_250_owners_manual.pdf
    • https://nokogijesa.weebly.com/uploads/1/3/1/4/131452879/toduwotixiwakidalini.pdf
    • https://puritokubopop.weebly.com/uploads/1/3/5/9/135968540/laduruxef.pdf
    • https://gixunilaw.weebly.com/uploads/1/3/1/8/131856646/borizir-lezulabir-gapikupegusim-tekarosu.pdf
    • http://nashremont.site/1279412313799ejv.pdf
    • http://artelamp.store/ping_pong_rules_game_to_210gqc6.pdf
    • https://wosuletoxo.weebly.com/uploads/1/3/0/7/130739711/pikofetewa.pdf
    • https://cdn-cms.f-static.net/uploads/4388833/normal_60400ee778833.pdf
    • https://cdn.sqhk.co/vixivizal/tSjhHBY/little_alchemist_game.pdf
    • http://instapresent.site/backward_design_lesson_plan_examplei1c2x.pdf
    • https://cdn-cms.f-static.net/uploads/4486987/normal_6046a48e4c3df.pdf
    • https://xisevulatunetu.weebly.com/uploads/1/3/4/5/134595014/be8c20e9b004.pdf
    • https://cdn-cms.f-static.net/uploads/4464877/normal_601364296163d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xobeminal.atwebpages.com/addition_and_subtraction_of_radicals_worksheet.pdf
    • https://e20d271a-53e3-41f9-9180-d6cd5f9fd148.filesusr.com/ugd/6cfc61_c12160f2c0d94f4ba44fc19a25f1054c.pdf?index=true
    • https://8eefcaf3-52f5-4123-8be5-b1f0aaeea45e.filesusr.com/ugd/1d3654_e3f39f3484174acf9c6ab949e3f754e1.pdf?index=true
    • https://ad843f61-c544-48d7-8cfb-3c048b9edb46.filesusr.com/ugd/0dd9ed_1df2b48b011b483fafce484d3f142e8b.pdf?index=true
    • https://dd39d194-9042-494f-90ab-223c96cf8da5.filesusr.com/ugd/5d3909_41a848bc5e2c4a4b991579036235bf60.pdf?index=true
    • http://kuzemepusiloj.onlinewebshop.net/68899696388.pdf
    • http://pugazapuxijal.myartsonline.com/teori_new_historicism.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_off0000f677.bin
ab260a3d540fb68c3240faf7dc392631ef0e3dfe9cfff12057a0f74d25201ca1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF677 5504 bytes
font_01_sfnt_off0001093e.bin
ec9846381f0f150f4bca9b1d742925f33e78ed24fb73b9a0f3ebd7a2eb4e3695		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1093E 11132 bytes

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