Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4e2e6be4014b586…

MALICIOUS

PDF

75.1 KB Created: 2021-02-28 06:10:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de9067a150757ab17f93c9494ace1d24 SHA-1: 259a20d51e3101584e2694093e2d2ef3b2f78292 SHA-256: a4e2e6be4014b5866f9623605992d75fdb63922229f9d5d6d9ae65a3b9f31ea8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'botokaw.ru', which is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest the document is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/123?utm_term=funes+el+memorioso+an%25C3%25A1lisis+pdf
    • https://dusibijerike.weebly.com/uploads/1/3/2/6/132695870/sudiriletebeju_tokepipoxe_waxek.pdf
    • http://fukerijinexin.mygamesonline.org/how_to_use_a_marathon_wr50m_watch.pdf
    • http://borejukeluteva.mygamesonline.org/bujepezaliki.pdf
    • http://sugameloxufe.mywebcommunity.org/what_do_debits_and_credits_mean_in_accounting.pdf
    • http://nebofimanigi.sportsontheweb.net/75376165122.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gubadix.epizy.com/what_is_the_best_electric_fence_charger_for_cattle.pdf
    • http://fafalibowadavuz.rf.gd/padi_open_water_diver_manual_answers_chapter_2.pdf
    • http://kemixirutuj.epizy.com/ncert_maths_class_10_solutions.pdf
    • http://resilasijajatil.myartsonline.com/massey_ferguson_3545_tractor_for_sale.pdf
    • http://vimixof.onlinewebshop.net/how_do_you_know_if_your_flame_sensor_is_bad.pdf
    • https://s3.amazonaws.com/xixonu/90259244354.pdf
    • https://s3.amazonaws.com/rorives/dejesobezosedujiwojixef.pdf
    • http://bumurulepowele.myartsonline.com/sukevuxerosomagolu.pdf
    • http://towawopijoxodor.rf.gd/44643007367.pdf
    • http://nejesezape.myartsonline.com/how_do_i_reset_my_netgear_wifi_extender_wn3000rpv3.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_off0000e6b4.bin
cc1e1b3bbd675cced607ae818496957dcdbfcfc611e086df615df84d911fdc17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B4 5376 bytes
font_01_sfnt_off0000f857.bin
b350a0602ac83454ca84eb6efabd4015cb05a61ec456397f1cd180610b7a0495		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF857 11352 bytes

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