Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3400cb11d25177…

MALICIOUS

PDF

89.9 KB Created: 2021-03-20 02:06:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 528bb9f064f880c20870c4be0d723cae SHA-1: 0bbb845e11017c2d4fbbc2702e89ac6395e7a763 SHA-256: cc3400cb11d25177befe841b480bc11788ce5b74751eaa821a7a185db81f515e
96 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for an external URI pointing to a URL related to 'hacked clash of clans android', suggesting a phishing or social engineering lure. ClamAV detection as 'Pdf.Phishing.Trojan' further supports malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI indicate an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://vilenefex.ru/wix?keyword=hacked+clash+of+clans+android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413122/normal_5fe36693e32cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471082/normal_5fc8b43d31874.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455886/normal_60018658cdbe2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446649/normal_5fdba9f015d29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/remeranexe/algebra_worksheets_for_grade_8.pdfIn PDF document text
    • https://2a07c75e-e898-48ba-b326-4cccc82d0599.filesusr.com/ugd/ff154e_6e7f16dba3154c1e8823101785e76483.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kegovev/mifomokanusaxizodenulinu.pdfIn PDF document text
    • http://vopodopo.rf.gd/veselasesuduxijaw.pdfIn PDF document text
    • http://lidesesepaz.rf.gd/equivalent_fractions_worksheet_ks2.pdfIn PDF document text
    • http://sagalesokalu.epizy.com/diwepebejegazepogitabuv.pdfIn PDF document text
    • http://selosaxugi.epizy.com/how_to_build_a_tiny_house_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/sekuvejawuki.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/getulujurakevekaj.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/derum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e27cc6cd-bc4e-4224-b461-efed0fce005f/how_to_program_genie_remote_to_garage_door.pdfIn PDF document text
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_d3f50bac79a44406a02c4dc68c3e9b02.pdf?index=trueIn PDF document text
    • https://e0529b0e-ffd4-46ae-8a9e-348c3aa8e3ae.filesusr.com/ugd/27320f_78d0445ea7eb4a4ea138627f7769af9d.pdf?index=trueIn PDF document text
    • http://jupojef.rf.gd/pozoxerekobuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5027e390-dba6-432c-9d04-8994edd7cace/is_clover_pos_good_for_restaurants.pdfIn PDF document text
    • https://eee7329a-c4d5-4508-a8fd-a8ba515f7d9f.filesusr.com/ugd/5ed802_5cbec9596896469c8fd53c948df6bc85.pdf?index=trueIn PDF document text
    • https://200c4c3d-185b-4246-b99f-f40cd7065c99.filesusr.com/ugd/3ed902_c17854f4045644e0ae524786fc4707a7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb85b15d-6960-4334-9045-968b7ec20eab/business_mathematics_course_outline.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_off00010c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C83 5132 bytes
SHA-256: b0d7920b08b503ba80f7627e8652560fcbb5034d785c5736794796bc53933aee
font_01_sfnt_off00011df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DF0 10612 bytes
SHA-256: f4f55a9dfee9e0eca54b0fd3a01e10544b0dd70c2c6c61c4aa16d04e552d7fe3
font_02_sfnt_off0001422e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1422E 16312 bytes
SHA-256: b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1

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