Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b8e4e4ac2012c5…

MALICIOUS

PDF

75.6 KB Created: 2021-03-12 05:03:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 652f1cc638e67ac632a58e5e738a1af1 SHA-1: e85b92b6095ab0e96b8c13da5ab60836449649e8 SHA-256: c7b8e4e4ac2012c5b3e05e4bd9b0b764f98ffd36a0a30dd454092d1dfcf1227e
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, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a strong indicator of phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'distribution channels'. No scripts were extracted, but the PDF structure and embedded URI are sufficient to infer a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/award?keyword=estructura+de+los+canales+de+distribucion+pdf PDF link annotation
    • https://cdn.sqhk.co/fasotaluvose/EHpPqjf/say_hi_to_your_mom_for_me_shirt.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/ejjBIjf/best_funny_viral_video_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/hcidkX7/gusotevepek.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/brAidKo/73913601072.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/31981e03-542c-45b1-8de1-b11d93eba67f/best_measure_theory_book_for_self_study.pdfIn PDF document text
    • https://1a441fb4-51dd-4528-a053-eb59ff664e18.filesusr.com/ugd/43d9d5_171c06094d51457fb6c7f9aded467a5f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d52145d-2758-4158-801f-306ad33c2f6c/73670038926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efe1b9aa-6e63-48bc-bd09-7b78d0743a18/ar_15_lower_jig_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/12701413030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/620f067a-29ae-4efb-aa43-fef5fedbae67/zigujudevitikeko.pdfIn PDF document text
    • https://c81c1a69-aec6-471c-ac34-7a6800eafc69.filesusr.com/ugd/9ef1ea_048024e5720f4524ae69281fa94269d2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gezetega/21024594733.pdfIn PDF document text
    • https://b5c4f4dd-ae1f-4f6a-908c-f463551224e4.filesusr.com/ugd/dafd60_ea0927b501924af5ad9c96aadc5a9df5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gozifep/apple_inc_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/45294765017.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/31645323798.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/91288738123.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/mesosotakogafujikilapa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32e38011-10df-4819-8668-c6fa94799de9/martin_luther_posted_his_95_theses_on_church_door.pdfIn PDF document text
    • https://cb8582fb-ab29-4f13-bfd4-623ca244ab52.filesusr.com/ugd/d61b30_81e723686270489bb99531edce1f1968.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b81aa27b-9649-4dea-ad3d-fc6eaa24449b/how_do_i_know_if_my_schumacher_battery_charger_is_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/529538b6-59b6-466c-85f5-5e6164ba9c6f/what_is_the_drink_of_the_greek_gods.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_off0000e7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F0 5244 bytes
SHA-256: 2ee2ffbcf5b1fd9289676471e53ee5f45c46d6a19d2a386ae297e9a8560a43f1
font_01_sfnt_off0000f9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D1 11488 bytes
SHA-256: 4177c81923744f54f8d17c2cdad70723d1731530148224724dbb2b8c26f3e62a

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