Malicious PDF — malware analysis report

Static analysis result for SHA-256 983ad432ac86bd21…

MALICIOUS

PDF

98.2 KB Created: 2021-04-05 01:40:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c953db47b2fccbcb594b866e8b9d7aa5 SHA-1: d22f38b4feacd1f5dce59ce62deccae10160963b SHA-256: 983ad432ac86bd2109b1a8575e86e60cce6f3d39c1bcdd0bd8c1e122b5de688e
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a malicious payload. The document body, though heavily obfuscated, contains keywords related to a Disney story, suggesting a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://nipisod.ru/award?keyword=la+bella+durmiente+cuento+disney+pdf PDF link annotation
    • http://italysummer.space/6347372371hdkuh.pdfIn PDF document text
    • http://lovewaits.ru/how_many_carbs_in_panda_express_chicken_and_green_beansctpcq.pdfIn PDF document text
    • http://jerimujolegem.medianewsonline.com/waneruvoxivapofu.pdfIn PDF document text
    • http://hellochildren.online/lxx_interlinear_greek-englishn9l1g.pdfIn PDF document text
    • http://bamefidev.mygamesonline.org/how_do_i_know_if_my_cpap_humidifier_is_working.pdfIn PDF document text
    • http://sivolejujivozul.scienceontheweb.net/gabawumepodaji.pdfIn PDF document text
    • http://rafale.store/where_did_the_name_tears_for_fears_come_fromk2s3y.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/zafaronivaj/construction_business_plan_template_free_download.pdfIn PDF document text
    • https://f06ae689-34e6-4fd9-b749-a5985747e370.filesusr.com/ugd/4117a9_31b11e647dec42a19e7bba2d61e200bf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kufazete/mutulomaxurorojomagekad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1d9b5db-e0fc-4efa-b026-dc82ed60320d/ap_calculus_ab_practice_exam_2018_answers.pdfIn PDF document text
    • http://zovibeviniga.myartsonline.com/47738592366.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/lidocaina_como_antiarritmico_mecanismo_de_accion.pdfIn PDF document text
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_a2b89314a51b42f1b017b83de58922f2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/58130443056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4a967c3-4701-410d-8d18-65d5ad114e48/31102416539.pdfIn PDF document text
    • http://lukafimagog.atwebpages.com/nubuna.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/effort_estimation_template_for_automation_testing.pdfIn PDF document text
    • https://1a9cd40a-f0d6-44d4-a143-19288280ca2b.filesusr.com/ugd/7a13df_478fdcde586f43b1a8c64bd782fca219.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/71066959135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac92d4ef-eb71-412b-8a0a-8d2580cf90d6/what_is_the_summary_of_the_story_beauty_and_the_beast.pdfIn PDF document text
    • https://f87ce62f-3d5d-4c42-bff3-2e7d00444551.filesusr.com/ugd/72ed28_56386e553d6e45278b9d499335e25d78.pdf?index=trueIn PDF document text
    • https://d9226533-59f4-4737-ae77-cfa9cdee5378.filesusr.com/ugd/d7c203_b6bcd72925944f01acb54ceaa3452ef6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/90280197830.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60a47bf2-8487-4aa5-bef4-233b819f8b5b/25599425284.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D7D 5160 bytes
SHA-256: 47b0cebfc64d17a3b77d1a98f87893d338ad3aa125b0900f2d54a6561ad8499c
font_01_sfnt_off00011f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F64 5484 bytes
SHA-256: 7b09d96795b49edc2150215c2504855e8f2276d759bf71e5e640b57f2bba14c7
font_02_sfnt_off000131ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131EF 7384 bytes
SHA-256: 3db2beb5c7092446332eca9a98f051ea69bc485a3e9dc20b733e48b0c74d952b
font_03_sfnt_off00014622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14622 16708 bytes
SHA-256: 9c1cd690e41faaa08c79d90a828eb9a2988e754e137cd1493b30dc10274143ab