Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda8ff5dfcc6ec9e…

MALICIOUS

PDF

81.7 KB Created: 2021-06-09 23:16:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 819852eb8b45e5c5df5bb961a3702ed7 SHA-1: 551eab69be5f952974a65e337156765922f1237b SHA-256: bda8ff5dfcc6ec9eb63f63487a3f4093f23715dd9a17e39841bc52e4c509d8b9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'classroom games for college students pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://baarspo.ru/123?utm_term=classroom+games+for+college+students+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450732/normal_60bc3bdaa1c26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407316/normal_5fc7d38a4a244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370302/normal_606c714757951.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376088/normal_5ffca671ca40b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410207/normal_5feb29696cd09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367961/normal_602d897c27237.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483870/normal_5fe2c198ad024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417140/normal_5fdd742a0f81d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470533/normal_5fded05fb16aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://finebov.pbworks.com/w/file/fetch/144473115/how_to_get_character_map_on_macbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e707972-1649-4829-b820-e5901d99fc92/vumirixubiju.pdfIn PDF document text
    • http://jopamedet.pbworks.com/w/file/fetch/144450366/antiphonale_romanum_2009.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/895a127d-4c7d-49e4-86b7-6f15f8a29e39/nifipirikopexazisa.pdfIn PDF document text
    • http://sijomirurefi.pbworks.com/w/file/fetch/144706920/julesak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be7a51e-8f1c-414c-ba52-f1e1b8f1c654/25180720483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f8c608f-2669-4992-aa6c-22a0cb3fbfb1/data_science_internship_salary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc78e33-d65c-4d65-a73f-11cb2b53d656/systems_of_equations_word_problems_substitution_method_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fce83ca-0aa8-453a-b2fc-e5bfa1125389/tatigezepamer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c8594bf-6b99-40d5-bfa7-08a77ff5878f/what_causes_a_red_spot_in_your_eye.pdfIn PDF document text
    • http://sazupamufode.pbworks.com/w/file/fetch/144590778/asphalt_8_mod_apk_unlimited_money_and_tokens_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0015546-789b-4e48-bf2c-40bfc7381630/how_do_i_reset_my_motorola_g7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0384523-71f1-46df-99bc-185601ed422e/coulombic_attraction_pogil_model_3_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a026d632-da9a-49c2-a2a4-7e748c27bb3e/16180009213.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c0f0779-a7c8-4235-bb9e-ff99388398ee/2004_honda_rancher_400_oil_change.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_off00010039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10039 5380 bytes
SHA-256: 7e7f5d13202d2f32cd737e8fd55db2ec244278e467ae7b8b952b1e697e613abd
font_01_sfnt_off0001126b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126B 11380 bytes
SHA-256: c1089a071fbd6c1bf7212ce99ec887c0f0d08dc6597c9c4638d6b5b34a87252d

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