Malicious PDF — malware analysis report

Static analysis result for SHA-256 15834510c051e1ad…

MALICIOUS

PDF

78.1 KB Created: 2021-04-07 14:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99f28b8fd665778c86fcd12f2db8a960 SHA-1: d255cead3db4ef021fbf0644e75c499f7dcece28 SHA-256: 15834510c051e1ad65eaced66f75d31a09294bdece85ef72e6369410d4fe653b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The embedded URL, https://xezojetit.ru/wix?keyword=rlv+collar+second+life, is the primary indicator of malicious intent, likely leading to a phishing page or further malware download. No scripts were extracted, but the PDF structure and embedded URI suggest a common phishing lure.

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://xezojetit.ru/wix?keyword=rlv+collar+second+life
    • http://securespot.ru/is_linear_algebra_necessary_for_data_sciencexuwgo.pdf
    • http://uanews.website/712932972721vunp.pdf
    • https://cdn-cms.f-static.net/uploads/4404753/normal_5fe7dc20b0151.pdf
    • http://mopegejeno.22web.org/washington_post_sunday_crossword.pdf
    • https://cdn-cms.f-static.net/uploads/4478383/normal_6059c3f4b0d4b.pdf
    • https://static.s123-cdn-static.com/uploads/4485711/normal_6007139e18cce.pdf
    • http://particulier-societegenerale.xyz/xabojukesimixixevoforerf63s6.pdf
    • http://thefortykuti.com/11335057422209ek.pdf
    • https://static.s123-cdn-static.com/uploads/4418166/normal_60077424df150.pdf
    • http://ritejofebawefu.22web.org/leonard_cohen_biography.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3e98efe9-e3ea-4ce9-b4a1-21b562ceb18b/gubukurizevikemuverowa.pdf
    • https://uploads.strikinglycdn.com/files/49a6df40-5c3b-44f3-8b78-13f427c28a29/constitution_of_nepal_2072_in_english.pdf
    • https://uploads.strikinglycdn.com/files/3e973add-f182-459a-b9e8-8062f956b2dd/39802918711.pdf
    • https://uploads.strikinglycdn.com/files/e3a9c267-a43d-4540-9fe8-e2d899d120f2/tekazol.pdf
    • https://uploads.strikinglycdn.com/files/8d4f785c-bc7b-4b61-bf22-16cd9b7f427b/who_owns_newsnation_usa.pdf
    • https://uploads.strikinglycdn.com/files/bdb168cb-f710-4937-be6d-b5436e666d6c/probability_and_statistical_inference_10th_edition_free.pdf
    • https://uploads.strikinglycdn.com/files/f3e48625-9d96-446b-9a2a-e0c1d9b922fb/is_the_ps_vita_discontinued.pdf
    • https://uploads.strikinglycdn.com/files/f8b94160-0842-427a-81fa-2f39bfa515a6/kenmore_elite_smartheat_quiet_pak_4_he3_model_number.pdf
    • https://uploads.strikinglycdn.com/files/9c06567b-02d1-42c9-909d-c989ee37715d/34631109229.pdf
    • https://uploads.strikinglycdn.com/files/7eb4d004-41d0-4acf-ace3-975fd50c73c5/xirejevenuzalazix.pdf
    • https://uploads.strikinglycdn.com/files/8658fafb-4b7f-4cc1-b751-93550ade9b13/where_a_river_runs_through_it.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eccd.bin
aeba53638c492fbb26cbf03e2ba13f090ed2e728e5ab7a864ae317d5c29f1c4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECCD 5084 bytes
font_01_sfnt_off0000fe28.bin
dfab3945eace5ba27be1ad95d63d5142397767eab6bca27773794b33bda2302c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE28 1796 bytes
font_02_sfnt_off000106b2.bin
de6c4cd0e7dc30e79a209dc355a76b1d465d99fc6b7df350adb2bf611cbee56b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106B2 10712 bytes

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