Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0d2b99d629a6c01…

MALICIOUS

PDF

109.4 KB Created: 2021-03-08 22:40:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c3429a6e15d6ace8c14e201a4f6a265 SHA-1: b0d5502e37fa7c0fd6188fd2ed173c5637695cb9 SHA-256: c0d2b99d629a6c01107f6db0b1af31b450d448c13cec460ab661fe922a8302d1
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection profile suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/award?keyword=numeros+primos+del+1+al+1000+pdf
    • https://cdn.sqhk.co/totudavomud/5hdzAgc/26171638247.pdf
    • https://cdn.sqhk.co/zifuvifiweva/aN25kXP/driving_school_classics_android_download.pdf
    • http://kefets.xyz/vutawurulolo885b.pdf
    • http://rent-nout.site/13342048016csotp.pdf
    • https://cdn.sqhk.co/tavaxikanabu/ehiPgfw/93634621669.pdf
    • http://manekobe.22web.org/punctuation_rules_in_english_grammar.pdf
    • http://gunepevoxop.66ghz.com/wupunavot.pdf
    • https://cdn.sqhk.co/duditizonut/JGVjeYv/nasutavofatewosodopovufu.pdf
    • http://1offpark.xyz/birds_of_prey_full_movie_online_free9ahij.pdf
    • http://shoes-storie.club/71625001306g53aj.pdf
    • https://cdn.sqhk.co/zexupibo/ehh7rjf/cod_world_at_war_zombies_cheats_xbox_360.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2c6cadbb-063f-463f-86ca-97c85437697b/ludimuwugixulotebaz.pdf
    • https://s3.amazonaws.com/nigimul/what_are_the_two_main_structural_differences_between_dna_and_rna.pdf
    • https://s3.amazonaws.com/purixifusipelid/41272810142.pdf
    • http://javidukasomeg.epizy.com/most_stable_cyclohexane_chair_conformation.pdf
    • https://s3.amazonaws.com/donarepemi/anne_rice_lestat_atlantis.pdf
    • https://s3.amazonaws.com/wulagisi/rinikotojakamukikasupi.pdf
    • https://667b589a-70dd-4c78-a03f-47f6e9f07b1f.filesusr.com/ugd/db80c5_2c7ace4ec18a4b549e3b392e05919d06.pdf?index=true
    • http://wojodine.rf.gd/how_much_do_you_have_to_spend_to_get_free_shipping_at_brandy_melville.pdf
    • https://s3.amazonaws.com/zabevog/duzojusuwonulavak.pdf
    • http://pulupalu.epizy.com/free_business_powerpoint_templates_microsoft.pdf
    • https://uploads.strikinglycdn.com/files/edb70401-2135-4183-81d9-8426c0d96dca/kitchenaid_artisan_stand_mixer_model_ksm150ps.pdf
    • https://9005a25f-7293-4a73-bb0f-bc58e8c16807.filesusr.com/ugd/e3834b_3f978214dbf347d5a5fc03a26ce95678.pdf?index=true
    • 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_off00017321.bin
fa2d03e01be7c0b6960ea7761e4239d1653687aaa6b6a6b1b66cd72cbcbd2cee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17321 5352 bytes
font_01_sfnt_off00018542.bin
1ed67674f3f27c1c5d15d945cd019442f4158790a33cad58ef9a446f2c46bf57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18542 9880 bytes

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