Malicious PDF — malware analysis report

Static analysis result for SHA-256 6966afe57d984e6a…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 00:14:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0ebba92a533b918962fcb1acfbb47bd SHA-1: 6be41b3c1b155b3084ba0e77cc6a39e4800877bf SHA-256: 6966afe57d984e6ae8f20da2da03bd8c131fd6a0f8c2568d09d8596126d6c01e
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to "Schwinn stationary bikes reviews" and embeds a URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URI is the primary indicator of compromise.

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://vilenefex.ru/award?keyword=schwinn+stationary+bikes+reviews
    • https://static.s123-cdn-static.com/uploads/4463298/normal_6003fa4e62499.pdf
    • http://kojazunupetip.mygamesonline.org/fesogevum.pdf
    • https://cdn-cms.f-static.net/uploads/4459469/normal_5fd63f291df8f.pdf
    • http://mokemowowove.mygamesonline.org/the_conference_of_the_birds_ransom_riggs_wiki.pdf
    • https://cdn-cms.f-static.net/uploads/4471945/normal_6026e04892159.pdf
    • http://xuwuvewisin.mypressonline.com/topupemudifovetuzarig.pdf
    • https://static.s123-cdn-static.com/uploads/4475866/normal_5ff5ef0dd9422.pdf
    • https://cdn-cms.f-static.net/uploads/4385852/normal_5fe6623223f40.pdf
    • https://static.s123-cdn-static.com/uploads/4413126/normal_600242be4889c.pdf
    • http://zipubezexupoka.mywebcommunity.org/how_to_get_blackheads_out_of_your_ear_by_yourself.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://siniligavaxuvul.onlinewebshop.net/best_tarot_card_for_career.pdf
    • http://badamowafe.onlinewebshop.net/how_to_reset_service_light_on_mini_cooper_s_2009.pdf
    • https://s3.amazonaws.com/vinivuxo/limping_child_guidelines_nice.pdf
    • http://radiviwix.onlinewebshop.net/what_temp_to_dehydrate_deer_jerky.pdf
    • http://zitasixan.atwebpages.com/mowekisepuvunirop.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_off0000e0a4.bin
84e3bde1ab3f70c2a2431708e367b73ec8625a1eb75dc29f397c63852cd4edfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A4 5416 bytes
font_01_sfnt_off0000f32a.bin
f173da3f226c4029d9ea9fbaff4a7cf937abcd64cc73f855a57db2d8f6fcc226		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF32A 10380 bytes

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