Malicious PDF — malware analysis report

Static analysis result for SHA-256 f98807a927a47889…

MALICIOUS

PDF

79.2 KB Created: 2021-03-27 23:30:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3194f8d62f32306d486d0858352c65d8 SHA-1: dc6c46f7fb99c498b5a825d5c6e3156b58f18eae SHA-256: f98807a927a47889f9e0361b48ae6dabfc29ff105d8fee2841171785e5357eb8
104 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to a suspicious domain, likely intended to deliver a payload disguised as an ebook. The presence of embedded URLs and the ML classification strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/aws?utm_term=new+testament+bible+ebook+free+download
    • http://rufoferapavinew.medianewsonline.com/75822435224.pdf
    • https://cdn.sqhk.co/fosuzonarefi/sifFQhc/askep_hematochezia.pdf
    • http://ch-redirect.icu/boposoa7rcw.pdf
    • http://verification-help.com/bubble_answer_sheet_1-_100_a-_eyb06a.pdf
    • http://nemugub.mywebcommunity.org/jamajededokabip.pdf
    • http://jawixogu.mygamesonline.org/simmons_madisson_crib_instruction_manual.pdf
    • https://cdn.sqhk.co/budajawisore/jbhdjcr/visalajivebigizabuzifi.pdf
    • http://steelsho1.club/jefoduwaxufizifijij593xz.pdf
    • https://cdn.sqhk.co/menidume/fwhgjjZ/bheem_cartoon_video_2019.pdf
    • https://cdn.sqhk.co/pulisamog/bjeHRgc/rugijewem.pdf
    • http://pinezotamex.getenjoyment.net/categorical_data_analysis_agresti_3rd_edition.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xutomoxu/how_a_bill_becomes_a_law_12_steps.pdf
    • https://013c3ecd-17dd-4738-ad87-554153c764a5.filesusr.com/ugd/36f25b_48f89b040b0c4d5db9c4fb079295b08d.pdf?index=true
    • http://ligiwekuxote.myartsonline.com/foxipe.pdf
    • https://59b7e61f-9850-45ee-add2-e9646db267e4.filesusr.com/ugd/5b9365_0a4161c7d483436c9af42c7567fa5818.pdf?index=true
    • https://s3.amazonaws.com/dotivaf/air_canada_flight_143_report.pdf
    • https://89e5ed4a-33eb-42a6-b5f1-9fc07ea1e15b.filesusr.com/ugd/ff68bb_e64dbaa912a94ef19a9f4a8c8cb2b919.pdf?index=true
    • https://s3.amazonaws.com/purufiz/queen_bed_frame_platform_with_storage.pdf
    • https://8994dc82-3839-475c-8de5-8afaa5c13229.filesusr.com/ugd/798b5e_e17ff6e678c14444a046459f354b6a43.pdf?index=true
    • https://1e2e1d2f-e5bc-406e-8ade-c93a3c5db6fe.filesusr.com/ugd/81c7be_e0ee7502f65f4b56a901cf577d07ccf8.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_off0000f585.bin
ec4057f9e7b1484c590a7a3620a2a805fa1e481a298eaefb6fc870e2e2cf8296		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF585 5320 bytes
font_01_sfnt_off00010799.bin
96554167d0fcd30e9fb2830f25073dfb96ae26f953e9b3767d1acf8aaf6e685f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10799 11112 bytes

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