Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecdb7d8fe50fc7d1…

MALICIOUS

PDF

77.7 KB Created: 2021-03-29 11:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 183e7fdaa9585e83ade9a64149a0826b SHA-1: 267204ef27eae4aec13b2040335f7b79e7a64beb SHA-256: ecdb7d8fe50fc7d1bd3c69e73b0d24d3b0698bca5bcfac28bfb1d9089dddd834
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used to host a phishing page or a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to religious figures, which is a common tactic in phishing campaigns.

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://pelibifir.ru/wix?keyword=face+to+face+with+elder+holland+and+president+eyring
    • https://cdn.sqhk.co/dedogupazib/ctiajcR/84008006464.pdf
    • https://static.s123-cdn-static.com/uploads/4370309/normal_5fe0d4caab872.pdf
    • https://cdn-cms.f-static.net/uploads/4384482/normal_60579a0ba021e.pdf
    • https://cdn-cms.f-static.net/uploads/4380088/normal_60493e20eb938.pdf
    • https://static.s123-cdn-static.com/uploads/4470401/normal_5ff0287112066.pdf
    • https://cdn.sqhk.co/naxupowu/aL8qQJV/pevafasanobusokaluwa.pdf
    • https://cdn-cms.f-static.net/uploads/4417119/normal_604adc30c9426.pdf
    • https://cdn-cms.f-static.net/uploads/4413110/normal_6060f98b45837.pdf
    • https://cdn.sqhk.co/mujawiru/jdCxhaI/startup_business_plan_ppt_template_free.pdf
    • https://cdn.sqhk.co/savadapo/ifbgghe/sinokoruxerakogobutexipu.pdf
    • https://static.s123-cdn-static.com/uploads/4377128/normal_60020d49b1926.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/loxopudizus/four_features_of_a_spreadsheet_application.pdf
    • http://pavinudoj.epizy.com/6541058400.pdf
    • https://s3.amazonaws.com/jajoxulabojaso/taco_bell_burrito_fresco_calories.pdf
    • https://s3.amazonaws.com/wudibirewuduto/diablo_3_reaper_of_souls_xbox_360_cheats_offline.pdf
    • https://s3.amazonaws.com/viromibukoleliw/bombay_dyeing_cotton_bed_sheet_amazon.pdf
    • https://s3.amazonaws.com/tarizirefevifab/imusa_pressure_cooker_instruction_manual.pdf
    • https://s3.amazonaws.com/mipizaju/jopafapugidi.pdf
    • https://s3.amazonaws.com/vonutavekip/how_to_make_a_line_graph_in_math.pdf
    • http://gajewokutonixa.rf.gd/check_plagiarism_online_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4f4.bin
19b852c987db3c6cb2323d4fcb8410329e185c657784c0e228e891365a8aed61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F4 5356 bytes
font_01_sfnt_off0000f72b.bin
2710547a314d95dc0ac1d2cd7d190136898dabc8e307cbac1da25150caf3eb1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF72B 10624 bytes
font_02_sfnt_off00011b42.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B42 4324 bytes

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