Malicious PDF — malware analysis report

Static analysis result for SHA-256 a906bb3efdd61f43…

MALICIOUS

PDF

75.6 KB Created: 2021-03-05 08:01:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6f4188ccc94861e83c8961e0feccd8d SHA-1: 1d4c646a73db1592ab2fb589eb1333cd2fadb411 SHA-256: a906bb3efdd61f43e5914f7237463719282d0140de0dd113bcf30f8b4a77100f
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, as malicious. It contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to leadership in Christian youth.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/123?utm_term=que+es+ser+un+lider+de+jovenes+cristianos
    • http://ranking-se.com/pyaar_tune_kya_kiya_mp3z3l48.pdf
    • https://cdn-cms.f-static.net/uploads/4455684/normal_6035eb129e2fd.pdf
    • https://static.s123-cdn-static.com/uploads/4411483/normal_5ff69d5aecd7f.pdf
    • http://nakrutkavk.site/wie_lange_Krabbenkuchen_im_Ofen_zu_Kmob0m.pdf
    • http://teksol.xyz/scientific_calculator_for_java_phone_freenlek5.pdf
    • http://good-production9.site/15296914055b983a.pdf
    • https://cdn.sqhk.co/bonirixa/jiahjyK/votajenosogopifixumariju.pdf
    • http://zoompol.xyz/parallel_coincident_and_intersecting_lines_worksheetf7bze.pdf
    • https://cdn.sqhk.co/pixazizaze/jiRibja/star_trek_timelines_arena_strategy.pdf
    • http://jonebukusopovet.mygamesonline.org/93288309032.pdf
    • http://meetsoda.club/5326893404403km4.pdf
    • https://static.s123-cdn-static.com/uploads/4368747/normal_6007d11ad2f61.pdf
    • https://static.s123-cdn-static.com/uploads/4420468/normal_5ff33bab80235.pdf
    • http://auth02mobility.com/dhhs_guidelines_updatee0jd8.pdf
    • http://ndfnasg.xyz/colornote_download_for_pch5tmj.pdf
    • https://cdn.sqhk.co/lusikagidet/jvGih4X/49444482348.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kozogasivufi.myartsonline.com/womiwukujupolizemo.pdf
    • https://52f9d6e5-2fd5-4906-a030-4d12f703b62a.filesusr.com/ugd/297ecd_2e637eee42304774aafdf3a04a6c3b40.pdf?index=true
    • https://f579be4a-c2ec-451d-94ee-532237c06880.filesusr.com/ugd/9f6a24_6fa589f4d4f64f49840fb280dbc93e68.pdf?index=true
    • https://0f285ee0-1b14-49a2-8a3e-060a2db94812.filesusr.com/ugd/4bf67f_823883477c844532b92529dc4eb4d2fe.pdf?index=true
    • https://780c8f77-0f51-49ab-8dd1-60a90eb210a4.filesusr.com/ugd/1b8612_08397feeb34740e09cd0fa3a628f4c4a.pdf?index=true
    • 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_off0000e766.bin
305f25923d7ea6c5224b94c537de840db91a88d796fe274ba648b38f039f7ec1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE766 5132 bytes
font_01_sfnt_off0000f8f0.bin
24cc238beb97c4992f33ac49973e377c69a79cb7296e3c1d6c94076663709d95
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F0 11764 bytes