Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4eff064fdf39a7c…

MALICIOUS

PDF

84.1 KB Created: 2021-03-18 03:13:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28384fa56db1ea0adb5d25cd340b40ed SHA-1: e0863d06e4a8a1938ad611f6ac48525b6ca1ec60 SHA-256: e4eff064fdf39a7c15d29d62deaf0370a6346d16112619b5675bedef1336d02b
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site or download further malware. The document body, though heavily obfuscated, contains keywords related to sales, suggesting a lure for phishing.

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://ponafet.ru/strik?utm_term=used+craftsman+rear+tine+rototillers+for+sale
    • http://kernig.online/luvemudalt181.pdf
    • http://agent-ritual495.online/fajuduqd673.pdf
    • https://cdn-cms.f-static.net/uploads/4451574/normal_6020554d15c8a.pdf
    • http://lowuwirakob.66ghz.com/how_to_show_data_on_pie_chart_in_excel.pdf
    • http://ontrade.top/417599667540djl0.pdf
    • http://zofufina.22web.org/xikofurofetafelobiligitu.pdf
    • https://static.s123-cdn-static.com/uploads/4422620/normal_5ffd1db31c3a7.pdf
    • https://cdn-cms.f-static.net/uploads/4407060/normal_602b5d50ab310.pdf
    • https://static.s123-cdn-static.com/uploads/4458827/normal_5fefe577eeb3b.pdf
    • http://8gusevshop.space/breitling_colt_chrono_ocean_manualri69g.pdf
    • https://cdn-cms.f-static.net/uploads/4490370/normal_5fd67dc721c41.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2d36458f-fdf2-4ce1-af28-409cb38cc1e6/28189747960.pdf
    • http://vomovawesojuti.epizy.com/77090088570.pdf
    • https://s3.amazonaws.com/sepawi/ensefalopati_hepatik.pdf
    • http://pidawuz.epizy.com/national_diabetes_guidelines_uk.pdf
    • https://uploads.strikinglycdn.com/files/269d82f8-d8f2-42e6-83a5-9aecf12b4bdb/38817949696.pdf
    • https://uploads.strikinglycdn.com/files/c26b59b0-59f9-480c-8bc2-c05195af6f41/dekuxisirijemodixuwi.pdf
    • https://s3.amazonaws.com/xirixepo/lusawaxukibetomowazokabel.pdf
    • https://uploads.strikinglycdn.com/files/ffd3c3dc-d9d9-4b02-915b-239f5969c461/vovutuki.pdf
    • https://s3.amazonaws.com/xezonijida/gita_press_bhagavad_gita_telugu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f344.bin
ac9bda665b27b40434562f25a84fd6eaf6810c294c1c2f0130e3ffeaa9716634		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF344 5160 bytes
font_01_sfnt_off000104bc.bin
68ee600f276b1a586c3150deb43e80daab660df8ff64dbfc10d9c185bc37b627		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104BC 11668 bytes
font_02_sfnt_off00012c6c.bin
2a247a753e8a01f70d7fcfa74e2d7baad7259a755652018209d99d19020bd12c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C6C 16332 bytes

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