Malicious PDF — malware analysis report

Static analysis result for SHA-256 094b6f91130ed3fb…

MALICIOUS

PDF

79.2 KB Created: 2021-04-02 19:04:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1403b8ec58dff6ad696df6998f842b24 SHA-1: ad11bf61be4753fe7f5fbe8ba07eb3a9ac1446b2 SHA-256: 094b6f91130ed3fbdcf61d1eadc1d1ab4d6ed2b0bdc41d2cb042b0f7a5f8899f
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, one of which is directly referenced in the document's metadata and appears to be the primary lure. The presence of embedded URLs and the nature of the detection suggest the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/aws?utm_term=how+can+we+have+a+good+relationship+with+god
    • http://fruit-ita.fun/secure_folder_app_permissions9fq3x.pdf
    • http://afracheat4.xyz/what_multiplication_numbers_equal_30wgc3p.pdf
    • https://cdn-cms.f-static.net/uploads/4454303/normal_601cae55b378a.pdf
    • http://opticsystem.website/jomogilabubikarehiga.pdf
    • http://temppicture.xyz/alphabet_espagnol_illustr17u99.pdf
    • http://storezone.info/intraparenchymal_hemorrhage_treatment_guidelineskkhdm.pdf
    • https://cdn-cms.f-static.net/uploads/4465555/normal_5fdc2e8d4d983.pdf
    • http://hr-insider.com/peliculas_de_barbies_en_espaol_comp9876c.pdf
    • http://alisabor.design/inkscape_vs_cricut_design_spacecyivu.pdf
    • https://cdn-cms.f-static.net/uploads/4391620/normal_6040deeaa0a01.pdf
    • https://cdn-cms.f-static.net/uploads/4446931/normal_60351d13ccf3b.pdf
    • https://cdn-cms.f-static.net/uploads/4385204/normal_5fd7ba4ec9a55.pdf
    • https://cdn-cms.f-static.net/uploads/4393638/normal_605d8ff94e3dd.pdf
    • http://lifeeuro.info/semekifibitejaxoeex8a.pdf
    • https://cdn-cms.f-static.net/uploads/4410678/normal_60214a15c58a8.pdf
    • http://pollsexpert.com/sherlock_holmes_ebook_downloadb4onl.pdf
    • https://static.s123-cdn-static.com/uploads/4377912/normal_5fdfbc5f1cc95.pdf
    • http://life50it.pro/karcher_k4_maintenance_manual3i5xz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mogedozara/bodoni_bk_bt_font_free.pdf
    • https://s3.amazonaws.com/tometubufimopim/radio_button_css_template.pdf
    • https://s3.amazonaws.com/jefazaxal/65195039707.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_off0000f811.bin
ca4b246d6e6fd8141c075d9a0afd57a6730e695f6aeec55f1d0e6b5821a36440
pdf-font-stream PDF embedded font (sfnt) at offset 0xF811 5448 bytes
font_01_sfnt_off00010aab.bin
56f1901f27ef61a1cf9c5e5dee5abd61bb405dd593d54d2403e41f03a99e3fa1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAB 11232 bytes