Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3c431ee29d6e4d…

MALICIOUS

PDF

166.2 KB Created: 2021-04-07 08:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 9b060325a420409fad05d27ef036904b SHA-1: 056a26cc35bebe9d4e6e439894516d4f16fe9fa4 SHA-256: 1e3c431ee29d6e4dca822b342ef147deee2b9ee383c1c953434c368dbf2a003d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV and ML classifiers flagged this PDF as malicious, indicating a high probability of malicious intent. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=ancient+greece+religion+symbols PDF link annotation
    • https://cdn.sqhk.co/zibomevuguli/Uicjcgg/studio_photo_editor_apk_old_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379851/normal_5fce52968b7a4.pdfIn PDF document text
    • https://cdn.sqhk.co/givujelised/ajbiijb/ivry_lane_gown_and_tuxedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393776/normal_60215d4a898fe.pdfIn PDF document text
    • http://warupipujamoru.sportsontheweb.net/how_to_reset_a_sansa_clip.pdfIn PDF document text
    • http://gifinibufenatar.medianewsonline.com/gisigekaso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465145/normal_6014f5590245b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417140/normal_60635010a7a6d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b82f19e8-3b1b-43cd-a3f9-0cff8773daa2/is_rainbow_six_quarantine_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/975eb44f-19c4-435a-92b6-7ad05fb3f3ff/introduction_to_mathematical_programming_applications_and_algorithms.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/server_side_work_checklist.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/masked_singer_monster_performance_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f43ee2f1-a4e2-4107-8817-33fe502834be/fun_race_3d_mod_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/chicago_pd_episode_guide_season_5.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/9291727569.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/line_6_hx_stomp_bass_presets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d22dbe0-cec4-4e82-8ff0-e3795c5af74b/taco_bell_fiesta_taco_salad_nutrition_facts.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/white_river_arkansas_trout_fishing_guides.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/dogemawupikapono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aefc3b82-e97c-4014-b216-c425e80bfeba/levapaditelab.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000252c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x252C4 5140 bytes
SHA-256: c0a62fdbb1f2677fdcd9ac9dd05fd65449a90749e6bc7d0ff31f33d0bbb71de8
font_01_sfnt_off0002643b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2643B 11452 bytes
SHA-256: 1e5b9db8ed98f5076841c5128e7f35482c96697c18c19e9c637c253437c9c91b

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