Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbd3d3263a7a3c02…

MALICIOUS

PDF

235.0 KB Created: 2021-03-23 04:11:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca39a2370e1ad0a324df9ad06cb31eba SHA-1: 295775c20886ab22de743b75944ceb8046cb2811 SHA-256: bbd3d3263a7a3c02fd1c8ebab52a94f0003258f4484a0182b1c34c3aaac27685
104 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain. Heuristics indicate the presence of external URIs and a potential download button lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9903

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pelibifir.ru/wix?keyword=genetics+crossword+puzzle+answer+key
    • https://cdn-cms.f-static.net/uploads/4454988/normal_5fd6137cd9e58.pdf
    • http://ragitikevuwa.22web.org/2019_bollywood_movies_sites.pdf
    • http://befodafojedugan.22web.org/tournoi_poker_live_2020.pdf
    • http://kovezemunoropu.iblogger.org/75197949050.pdf
    • https://cdn-cms.f-static.net/uploads/4426828/normal_5fda8a62d4523.pdf
    • https://cdn-cms.f-static.net/uploads/4380079/normal_60420ab9d8d7e.pdf
    • http://sufepivu.22web.org/best_adventure_movies_2018.pdf
    • https://cdn-cms.f-static.net/uploads/4412391/normal_5fe687ee04453.pdf
    • https://cdn-cms.f-static.net/uploads/4490364/normal_60315da13553e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5dc809a6-0724-421d-9bac-cafaba271534/real_estate_finance_and_investments_14th_edition_solutions.pdf
    • http://dimonejoxu.rf.gd/pavobimekexutaxonotor.pdf
    • http://lupibewexuzu.rf.gd/87023140893.pdf
    • https://uploads.strikinglycdn.com/files/2ee96679-9a95-4a5d-9f87-96d56df01c74/67390538002.pdf
    • http://wipapirub.epizy.com/tagijif.pdf
    • https://s3.amazonaws.com/gogunabones/ugly_love_carte_romana.pdf
    • https://s3.amazonaws.com/kovozenamofox/average_speed_mbps.pdf
    • https://s3.amazonaws.com/rujimidujek/57726466006.pdf
    • http://debefataxa.rf.gd/hooke_s_law_lab_report.pdf
    • http://tolitaxolumupu.rf.gd/wivukobutitabifufijisijaj.pdf
    • https://uploads.strikinglycdn.com/files/71025a6a-f390-4adc-9790-556ff7aa8ded/how_to_scale_a_figure_in_matlab.pdf
    • http://xuvawesap.epizy.com/is_there_a_nail_salon_open_today_near_me.pdf
    • http://tosopipates.epizy.com/29962455516.pdf
    • http://rosaboz.rf.gd/body_parts_memory_game.pdf
    • 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_off000364f2.bin
8de54a093725361bbe1b0d13f17308bcb5aa8c27dd505f175870a11653c03ff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x364F2 5404 bytes
font_01_sfnt_off0003778f.bin
9e51988a60786d65ac1485349c5afdc3942fea79213130a6242d8977759029e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3778F 11032 bytes

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