Malicious PDF — malware analysis report

Static analysis result for SHA-256 d650663612be8d54…

MALICIOUS

PDF

87.2 KB Created: 2021-03-20 14:19:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52381fa37c29d9003a81178f312d6421 SHA-1: 181f51df0f1ee4eda9ecbfa4bc3723ee83eb4845 SHA-256: d650663612be8d54df197859318a4cd0e7d372a1ae901244c74fedd35f4e3339
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely intended to deliver a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. The document body, though heavily obfuscated, suggests a lure related to educational materials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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=coordinating+conjunctions+in+english+grammar+pdf
    • http://erethiztzj.space/360_smart_camera_app_apk4py32.pdf
    • https://cdn-cms.f-static.net/uploads/4450907/normal_5fd173d1b9a14.pdf
    • https://cdn-cms.f-static.net/uploads/4424376/normal_5fdbc3712a864.pdf
    • http://nemeloru.66ghz.com/verbs_worksheet_third_grade.pdf
    • http://5gusevshop.space/145968800080b2cm.pdf
    • https://cdn-cms.f-static.net/uploads/4380876/normal_60400c730ab2f.pdf
    • https://static.s123-cdn-static.com/uploads/4530578/normal_600326f4d5bbe.pdf
    • http://cheatyou.site/black_panther_a_nation_under_our_feet_book_34tkky.pdf
    • https://cdn-cms.f-static.net/uploads/4444884/normal_6048262f990a7.pdf
    • http://com-signto5.xyz/candesartan_available_dosage_formsn2cae.pdf
    • https://static.s123-cdn-static.com/uploads/4366374/normal_5fc95d4eddd03.pdf
    • http://afracheat5.xyz/hampton_bay_ceiling_fan_and_light_stopped_workingxxia4.pdf
    • https://static.s123-cdn-static.com/uploads/4366010/normal_5fdf561f8e486.pdf
    • https://cdn-cms.f-static.net/uploads/4408996/normal_601e5b2674b89.pdf
    • https://static.s123-cdn-static.com/uploads/4451212/normal_5ff262db4ac78.pdf
    • https://cdn-cms.f-static.net/uploads/4409818/normal_60437b128dfd1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c72a6d71-2fad-4f5a-8b7a-a7c165485bce.filesusr.com/ugd/a4966f_d49bb1100f254d02aab45ff0fdf350db.pdf?index=true
    • https://s3.amazonaws.com/remavuj/nekat.pdf
    • http://bosapaw.rf.gd/free_background_music_for_cooking_videos.pdf
    • http://kidojudal.epizy.com/psychology_facts_book.pdf
    • https://c3bb11cb-ba02-405d-8462-2b4421b436e1.filesusr.com/ugd/4c7814_f8145787102f45ab9271cabeea58e8a7.pdf?index=true
    • https://s3.amazonaws.com/wemazun/vetinosokolozosiwo.pdf
    • https://s3.amazonaws.com/paropabaru/50160949696.pdf
    • https://s3.amazonaws.com/fefurorobumi/sharp_split_type_aircon_manual.pdf
    • http://xugomoxuniwemo.rf.gd/dungeon_world_character_sheet_editable.pdf
    • https://84bc2af4-305a-40b7-847c-8c52cb6b08d2.filesusr.com/ugd/a2e525_a53dfff09d2441b0a76d734468992725.pdf?index=true
    • https://3dcfbd4a-ef33-49dc-a04a-0aaf5307c30d.filesusr.com/ugd/b47706_11f6d308153248d0ac7458434f6ea0ae.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_off00011584.bin
db6d021af64d6b8ee2e91f1199d0535640449604ba7804ab55f09d5394a1a21e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11584 5548 bytes
font_01_sfnt_off0001283a.bin
57e14c9ea9c1673797a6e356d7f272db7b69af302d6fc7271b615120aea7ba2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1283A 10884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.