Malicious PDF — malware analysis report

Static analysis result for SHA-256 37d948d54f7e0d0f…

MALICIOUS

PDF

81.6 KB Created: 2021-02-26 14:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 09f3b05a4146303535ba3fc3f74fa856 SHA-1: 5ccd83dbe95faea14003ea10e2d24c2d7f5cfc1e SHA-256: 37d948d54f7e0d0fc22eb457724fa47c4a8e67d6becf757191bf5a3bbb165509
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=ramadan+2020+times PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414360/normal_6022045d7f098.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498842/normal_6007404ad4b56.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/qhhKhat/chicken_sounds_congested.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473052/normal_5fe0bfd4bb478.pdfIn PDF document text
    • http://vibipigida.22web.org/88947232094.pdfIn PDF document text
    • http://coins24h.com/spinal_cord_compression_mrirk6dz.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/GHjc9db/13_colonies_project_high_school.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495065/normal_5fca1239add8d.pdfIn PDF document text
    • http://adv-workshop.site/pes_2013_trke_spiker_salam_indirvdnqg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366632/normal_60038a2a35375.pdfIn PDF document text
    • http://tiktokfrance.fun/merchant_of_venice_with_translationudrbb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447433/normal_6002133439b7b.pdfIn PDF document text
    • https://cdn.sqhk.co/wasefago/ujege45/abc_channel_7_new_york_live_stream.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476294/normal_5fd672d71138a.pdfIn PDF document text
    • http://zasoremejoka.iblogger.org/luwuritolaxusubikunowibus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuxekesimulir.epizy.com/to_kill_a_mockingbird_chapter_10_worksheet.pdfIn PDF document text
    • http://vodesoxiside.rf.gd/tuxatemefadugunomafekagod.pdfIn PDF document text
    • http://sivokag.epizy.com/barcelona_map_tourist.pdfIn PDF document text
    • http://togipumenotu.epizy.com/kilimid.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e50b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50B 5124 bytes
SHA-256: 765dc49db58c7bfdb1acadc8cf972b2eee3cf4ebbe64ea5bf7b94e67226f3908
font_01_sfnt_off0000f668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF668 11988 bytes
SHA-256: 6ff1d8df85ad307e2388cae2ae685d7d06f025f674d3e7f1bb663947f2bea9e6
font_02_sfnt_off00011cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFC 17628 bytes
SHA-256: f219dec414bd90fc0920dfa8e0273f8ac942b93dd557a671d641ecca9fd6996e