Malicious PDF — malware analysis report

Static analysis result for SHA-256 a277fc2264e88468…

MALICIOUS

PDF

84.9 KB Created: 2021-03-12 10:46:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00dd4e49b13dbcbec09724015fefc963 SHA-1: f120d985151c5069141ae7dc77879ff389666939 SHA-256: a277fc2264e88468ffd7f20c88e8f3e07daeffe0c3211f9944540685f290c909
96 Risk Score

Malware Insights

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

The PDF file, identified as malicious by ClamAV and an ML classifier, contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, appears to be a lure related to McDonald's nutritional information, suggesting a phishing attempt to trick users into visiting the malicious URL. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly indicates a phishing or credential harvesting attempt.

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://gimoguvi.ru/123?utm_term=mcdonald%2527+s+dollar+menu+nutritional+information
    • https://cdn-cms.f-static.net/uploads/4421056/normal_600e93423c07a.pdf
    • https://static.s123-cdn-static.com/uploads/4469349/normal_6006f20197a8c.pdf
    • https://cdn-cms.f-static.net/uploads/4461525/normal_601e655c8d7a2.pdf
    • http://taxarigi.sportsontheweb.net/hazardous_materials_identification_system.pdf
    • http://liwurivosopap.medianewsonline.com/hindi_film_script_writing_book.pdf
    • http://tufuwavaziga.mygamesonline.org/zamafevubasepiku.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/joterige/88971733695.pdf
    • https://s3.amazonaws.com/zamuriza/chrome_full_version_free_for_pc.pdf
    • https://s3.amazonaws.com/zewimu/anxiety_disorder_definition.pdf
    • https://s3.amazonaws.com/mokuwanibof/gobuxivabatebikuzinatefad.pdf
    • https://s3.amazonaws.com/jepavilutabilel/today_weather_report_of_dunedin.pdf
    • https://s3.amazonaws.com/babuxufarizuxur/app_internet_speed_meter_lite.pdf
    • https://s3.amazonaws.com/lomuper/basic_cricket_rules.pdf
    • https://s3.amazonaws.com/tamovagag/dikulud.pdf
    • http://jatoxat.atwebpages.com/walmart_employee_handbook_2019.pdf
    • https://s3.amazonaws.com/gotenukevepunin/fragmentary_passage_guide.pdf
    • https://s3.amazonaws.com/jevedijadiki/taranusudoxofu.pdf
    • http://mawokale.myartsonline.com/blank_hundreds_chart.pdf
    • https://s3.amazonaws.com/wegugus/ccleaner_full_version_free_blogspot.pdf
    • https://s3.amazonaws.com/numunenoji/vienna_chestnut_netherland_dwarf.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_off00010ec8.bin
f6eb6ba3b6835410b53a87c2f03133f0b0adaad794f9ccef4d15598d39b81d68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EC8 5204 bytes
font_01_sfnt_off00012077.bin
ed40e6f4adbaa9ac80809cc73ac912a3acfb8aa04d670aa1b895182cba74c005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12077 10952 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.