Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f4988ea3db22a72…

MALICIOUS

PDF

84.1 KB Created: 2021-03-16 06:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d3b0cbf34eca34f50d0baa1a32b2231 SHA-1: 263fb10d167911429171b3e9d65826b38d148ab3 SHA-256: 4f4988ea3db22a726734050ae4faf21424876ff27786cc2b55ba0d0e2b304ad2
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a malicious domain, likely intended to trick the user into downloading further malware or visiting a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI and the high confidence malicious classification suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://pelibifir.ru/123?utm_term=algebras+de+clifford+pdf
    • http://dehydratedoriginalgoodness.com/maggie_a_girl_of_the_streets_chapter_16_summary4znv8.pdf
    • http://wudaxozibutix.sportsontheweb.net/girl_boss_urban_dictionary.pdf
    • http://pewadulojuba.mypressonline.com/branchement_interrupteur_va_et_vient_en_simple_allumage.pdf
    • https://wagidojinubem.weebly.com/uploads/1/3/1/4/131438567/5b26db7e25d2743.pdf
    • http://familyit.info/wuvegebajanozoretivivubed1wllm.pdf
    • http://newsportstechnology.ru/bt_business_hub_3._0_manualyw7pf.pdf
    • http://glossywp.online/duxiana_sheets_online3ccox.pdf
    • https://cdn.sqhk.co/gegenosuzun/jdielCh/minecraft_pe_beta_mods.pdf
    • http://frankiearvelo.com/the_shadow_over_innsmouth_synopsisbxyb0.pdf
    • http://classicalnaturally.com/dedonesawozom5p0.pdf
    • http://bitjoms.xyz/mujifuziynxtx.pdf
    • http://ceter.xyz/12647815655d2j50.pdf
    • https://zavowije.weebly.com/uploads/1/3/2/6/132680855/5108070.pdf
    • https://cdn.sqhk.co/baxorurifina/oCiec6z/new_family_house_builder_mod_apk.pdf
    • https://cdn.sqhk.co/terupilenu/IYcghie/instagram_dating_scams.pdf
    • https://poxatekegevu.weebly.com/uploads/1/3/4/7/134753674/vedurona-limov-ponuxunofewevi.pdf
    • http://foodguideblog.com/nufixiligobarcynaa.pdf
    • http://select-get.top/227981994078pyta.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sazexuxezife.rf.gd/17727131617.pdf
    • http://panafinuniro.epizy.com/13208166265.pdf
    • http://fenifobixa.epizy.com/48327036855.pdf
    • http://fivupibutori.rf.gd/official_ffa_manual_worksheet.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f052.bin
aee0cc57bef4dd3b6f8518aae9ed2deea2ee8c562bde1c76ac6682d867419a8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF052 5452 bytes
font_01_sfnt_off000102ea.bin
9d3b50e49ee42aba7c6c28cb1e18555c5bbb3a0566b4abbc23a9d85d491ed195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102EA 11764 bytes
font_02_sfnt_off00012ae5.bin
4dffa1aaddfea72e1e1db1548b922986576d868136019caa744e552f1f7b595d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE5 17016 bytes

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