Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e9b19a2b059705…

MALICIOUS

PDF

81.8 KB Created: 2021-04-13 18:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37667470cc2e5981cb5041d4be58ee12 SHA-1: 7a2aff2a485788fded6349031a10ff1f4a99e329 SHA-256: 37e9b19a2b059705cf3df0660293cbea3379ce833e85b51854b3019edff7d971
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'permit test locations'. The presence of multiple embedded URLs suggests an attempt to redirect the user to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://seumenha.ru/strik?utm_term=ma+rmv+permit+test+locations
    • http://sifulodidikit.22web.org/sefatolaseleferoje.pdf
    • http://finonit.mypressonline.com/livre_d_abramelin_le_mage.pdf
    • https://cdn-cms.f-static.net/uploads/4378383/normal_602b45d48efe4.pdf
    • http://zereteleriw.getenjoyment.net/smiths_bible_dictionary_amazon.pdf
    • https://cdn-cms.f-static.net/uploads/4372087/normal_601901e028549.pdf
    • https://static.s123-cdn-static.com/uploads/4484636/normal_5fe2d0b79a38f.pdf
    • https://cdn-cms.f-static.net/uploads/4369664/normal_6061905458464.pdf
    • https://cdn-cms.f-static.net/uploads/4420244/normal_605d7c837e5c4.pdf
    • https://static.s123-cdn-static.com/uploads/4455673/normal_5ff80344b0418.pdf
    • https://cdn-cms.f-static.net/uploads/4470961/normal_6043122dd7162.pdf
    • https://cdn-cms.f-static.net/uploads/4465393/normal_600c88061cec6.pdf
    • https://cdn-cms.f-static.net/uploads/4467612/normal_6018163c53f69.pdf
    • https://cdn-cms.f-static.net/uploads/4383147/normal_6035389b6f664.pdf
    • https://cdn-cms.f-static.net/uploads/4367920/normal_602573e2480bc.pdf
    • http://tapedazew.22web.org/the_vegan_stoner_cookbook.pdf
    • https://cdn-cms.f-static.net/uploads/4402737/normal_603e18c953c40.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wufagezigedo.onlinewebshop.net/rigagazugatufenine.pdf
    • http://zajupulavofawi.myartsonline.com/bazezosuporu.pdf
    • http://jafixomedimun.onlinewebshop.net/xivatarejogeremev.pdf
    • http://ligiwekuxote.myartsonline.com/webonikezixuleture.pdf
    • http://neloralo.myartsonline.com/cantigas_de_amor_e_de_amigo.pdf
    • http://bixixus.epizy.com/michelin_guide_singapore_map.pdf
    • http://boxijekew.atwebpages.com/3d_flow_chart_creator_online.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_off00010351.bin
1d5ec0f7abe80b79740aebecc7649fb86e9f753f34fd96185b575e41aabd3c2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x10351 5144 bytes
font_01_sfnt_off000114cf.bin
c840b8f8b0bb607dd11dcc52490bd93f7fdbd8ded16021801048bd707dcc9144
pdf-font-stream PDF embedded font (sfnt) at offset 0x114CF 10928 bytes