Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf3faa4f5065fd0…

MALICIOUS

PDF

75.6 KB Created: 2021-03-18 21:50:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76522af3751ebbf1d0070769a0cf2a74 SHA-1: db3298fb21857e4533b5995de404aa8ea447cace SHA-256: eaf3faa4f5065fd0a1f42b505239fabbba3febb69fc7c8d2240e970e7eaa8d48
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI that points to a URL commonly used in phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. The presence of an external URI suggests an attempt to redirect the user to a malicious site or download further malware.

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://maypoin.ru/award?keyword=blue+book+of+english+grammar+pdf
    • https://cdn.sqhk.co/madumubo/gjhbahc/combat_flight_sim_ps4.pdf
    • https://cdn.sqhk.co/gujowaxexag/3Iigp23/leo_dictionary_app_download.pdf
    • http://tewatag.medianewsonline.com/toxifibizenusi.pdf
    • http://vertigoa.online/48658001659s1hp5.pdf
    • http://xifemimuxudita.22web.org/morris_college_advanced_vocabulary_list.pdf
    • http://lezigovedavide.getenjoyment.net/33351872578.pdf
    • http://jirenaxapibetig.scienceontheweb.net/how_to_tell_if_wood_stove_is_epa_certified.pdf
    • http://piwulag.sportsontheweb.net/advanced_english_vocabulary_with_examples.pdf
    • http://covid-19online.site/12297928052lfdk0.pdf
    • http://gilelugojes.iblogger.org/lost_girls_2021.pdf
    • http://jgndegs.info/48097585695jdwsj.pdf
    • http://giwewigipebi.medianewsonline.com/biology_practical_book_for_class_11_free_download_tamilnadu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xuruganota.epizy.com/12391169002.pdf
    • http://jubidak.epizy.com/somafoxena.pdf
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_0dcd22f40cee42bf93d74efba0c4957f.pdf?index=true
    • https://e4fb9bf1-a3d6-4767-9bf2-2a1021e5dc09.filesusr.com/ugd/53cfc7_2c1f6f3b5a84440ea4f793bfc72a6d57.pdf?index=true
    • http://jasigobup.epizy.com/fakuwexejidikulivezela.pdf
    • http://faxunarin.epizy.com/husqvarna_weed_eater_128cd_head_removal.pdf
    • http://lozosotozaroxi.rf.gd/how_to_do_merkaba_meditation.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_off0000df5f.bin
b1adea9237367f6dcaddd4ef3b3defd9ec269b846e79d0f8fca3f4c5b568a1e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5F 5708 bytes
font_01_sfnt_off0000f2a2.bin
a4d73f78dab4f6da21bfd219bf45ac8fa23a5a55cf1342c26e738dc530d2c846
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A2 19016 bytes