Malicious PDF — malware analysis report

Static analysis result for SHA-256 d623d01bb17b35d3…

MALICIOUS

PDF

148.3 KB Created: 2021-03-24 04:12:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7ba2e01bd756d06ab614f9c8a3a4b070 SHA-1: f392de818196f6649d96b609488d667bc53b860e SHA-256: d623d01bb17b35d31cf21085a6a903996aac5de98329af8c0211b020c582a02a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. The document body, though heavily obfuscated, suggests a lure related to 'anti-intellectualism in the philippines pdf'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://resalured.ru/award?keyword=anti+intellectualism+in+the+philippines+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466151/normal_600615dd2965a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402246/normal_604cf6ad374c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413986/normal_60205ea7b7021.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424672/normal_5feb162a46177.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444098/normal_5fffd9eb3e3f8.pdfIn PDF document text
    • http://copyright-help-center.com/android_tv_box_wifi_remote_appxm1r8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465702/normal_5fe1461739e72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489834/normal_5fdbea9b586df.pdfIn PDF document text
    • http://show-visitor.xyz/what_is_dynamic_surface_tensioni6xwv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_601a11095ce91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464851/normal_6004cd7a025b2.pdfIn PDF document text
    • http://mifirejetevina.getenjoyment.net/fozomenajatedoxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/9648122482.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/39269426175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5902692f-29fe-40d7-bd4d-4cdcf3a479b0/namebufibibopa.pdfIn PDF document text
    • http://samesesodore.onlinewebshop.net/3675879497.pdfIn PDF document text
    • http://rivenoke.onlinewebshop.net/78327803704.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/javascript_concatenate_strings_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/is_the_maze_runner_scorch_trials_on_hulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa06575d-fed5-4d25-a4fe-1d6e13d16814/zewifo.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/how_to_change_time_on_citizen_eco_drive_wr100.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001de19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DE19 5288 bytes
SHA-256: 08a34848d24f31121817a0b6d65812a8795c8d9897c95b182475fac8e2d53712
font_01_sfnt_off0001efeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EFEB 6664 bytes
SHA-256: a54e59bf6bba5d11da4bc2f2c92a375f81d23cce3d57ea43caf14ea100cd936e
font_02_sfnt_off000201b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x201B2 13984 bytes
SHA-256: cc3935f099b1fd22e0459eec56ac8db36cd44e6a859269cd7e11aba62fe16927
font_03_sfnt_off00022d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22D51 16148 bytes
SHA-256: d64777a7d65be8b4ff3a01fb6dc8605daf54527c13afd64b593f36d2fbe3c913

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