Malicious PDF — malware analysis report

Static analysis result for SHA-256 931bf8f5e38978da…

MALICIOUS

PDF

94.1 KB Created: 2021-02-14 22:53:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8af5c1d836a7830ae8c29ff81fea7087 SHA-1: dc05ed118f0b913aa7d727b52d22c7fcc2c49ab6 SHA-256: 931bf8f5e38978dad074f37e31a7b51046cb0556e3c543afc1692c15360df365
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 PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the presence of external URIs suggests an attempt to download or redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=eid+2015+in+usa
    • http://prizinsta.site/awei_y200_user_manualj92o7.pdf
    • http://cybety.xyz/73240463489nlc4n.pdf
    • https://cdn.sqhk.co/zotofoza/e5kqrhg/guide_for_pes_2020.pdf
    • http://debopuforu.22web.org/33719129063.pdf
    • http://free-at.pro/gauge_pressure_vs_absolute_pressureya7h7.pdf
    • https://cdn.sqhk.co/titabofasika/ZVjb9MJ/58453216432.pdf
    • http://derewopenila.22web.org/86028284954.pdf
    • http://4escam-bot.online/aplikasi_vsco_fullpack_gratis_terbaruwm7pe.pdf
    • http://emmetrix.net/duplicity_backup_to_local_directory4u8u1.pdf
    • https://cdn.sqhk.co/tijovomiv/jeMheAc/top_up_ml_diamonds_globe_load.pdf
    • http://varietystore.website/kaspersky_antivirus_2018_android_apkf3hg0.pdf
    • http://ek-arenda.ru/79895324679bv31g.pdf
    • http://construt.site/wozorazufipomotakifuneb231dy.pdf
    • http://storeeu.info/kk_adam_indirmbrom.pdf
    • http://nojosomefoviw.66ghz.com/aua_psa_screening_guidelines.pdf
    • http://vebumugaw.22web.org/phonics_worksheets_2nd_grade.pdf
    • http://1-bog.ru/nogepaxuxixudenogoh8e7q.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lelekon.epizy.com/78310323009.pdf
    • http://nogomazarem.epizy.com/digital_marketing_mcq_questions_with_answers.pdf
    • http://fadakivok.rf.gd/pajazuweturav.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000119d6.bin
5ffaa79793a85103cff7241a8a4a4e902bff71c92afbfaee85c5d397fad1a3ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x119D6 5096 bytes
font_01_sfnt_off00012b46.bin
6f305931f88b47a4d80dba7a7957f4565b09e420cef696c254aacd3c99004b2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B46 10452 bytes
font_02_sfnt_off00014f03.bin
d5700a045b030b450a2b958612b0d017929ee439cc06b709832575e894b2cef0
pdf-font-stream PDF embedded font (sfnt) at offset 0x14F03 17976 bytes