Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a8ca7696cefb38…

MALICIOUS

PDF

81.1 KB Created: 2021-03-20 16:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa3780372e42f87468b610de1a7b4164 SHA-1: 967fe0b439c5976269ac1d6bd740d561e48bf789 SHA-256: b0a8ca7696cefb387fb68d94805541296ec8e1fa81112660f6a0843ca3ea669b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely intended to deliver a payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by presenting a seemingly legitimate document that leads to a harmful external resource.

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://kuzutuzo.ru/strik?utm_term=how+to+find+mean+and+median+of+grouped+data
    • http://lianhua.life/sample_award_acceptance_speech_templatebwbko.pdf
    • http://extrameets.fun/canada_immigration_application_form_skilled_workerzbpy9.pdf
    • http://my-favshopc.online/555470102882o5va.pdf
    • http://setokanekema.mygamesonline.org/2008_acura_rl_transmission_problems.pdf
    • http://slmit.fun/bhojpuri_gana_video_hd_meinwd6qx.pdf
    • http://bafiselavanebep.mywebcommunity.org/lojemebezozaja.pdf
    • https://cdn.sqhk.co/lezubenewago/nhgVaIL/tennis_clash_3d_mod_apk_unlimited_gems.pdf
    • http://arm-watch1.club/change_adt_alarm_code_safewatch_pro_300080qlu.pdf
    • http://evromotors.net/class_11_applied_mathematics_book_2020-21evwo9.pdf
    • https://cdn.sqhk.co/vewukiziwemi/MijiLja/car_bingo_printables_australia.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/lodazojamuva/what_is_a_hard_bricked_android_phone.pdf
    • https://s3.amazonaws.com/vutame/harley_quinn_wallpaper.pdf
    • https://uploads.strikinglycdn.com/files/0fef93c3-570b-4903-a1eb-9bc536f5b479/nigej.pdf
    • https://s3.amazonaws.com/xixonu/aston_martin_vantage_buyers_guide.pdf
    • https://uploads.strikinglycdn.com/files/4af6c00b-101c-46a6-9cc7-721688c6024d/91612241149.pdf
    • https://s3.amazonaws.com/kexamoxusinixu/fejarimebexufesuriralite.pdf
    • https://uploads.strikinglycdn.com/files/519641d2-1694-48ee-95ca-aee55487e129/how_to_reset_iphone_with_itunes_pc.pdf
    • https://uploads.strikinglycdn.com/files/38cdee02-bae7-42d7-942f-83c2aca4c525/nowekukuzamopagimevepune.pdf
    • https://uploads.strikinglycdn.com/files/f3689f75-0413-42fb-b1ec-602502dc5c8b/the_great_mental_models_book_review.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f208.bin
46accfda32d9f5e8ccffa1ba3789b4a9be44e625e21c9130764d98515d6e861e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF208 5084 bytes
font_01_sfnt_off0001034b.bin
b7f04ea5496fa04680d57fd171de06ffcfbcc0242842801482ebb7a28a069ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1034B 10984 bytes
font_02_sfnt_off000128f8.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128F8 4324 bytes

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