Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6172d8f2780fde3…

MALICIOUS

PDF

80.7 KB Created: 2021-03-16 07:05:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99e98a662a700e77c2185733d3a16447 SHA-1: 23c261b04469eee124cf144be4878980ccab8192 SHA-256: e6172d8f2780fde3f8f8d5ddbb304035d48513c6a64501e91770948730c88ea4
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that, when clicked, leads to a download. The document body text and the URL itself suggest a lure for downloading content, likely malicious given the ClamAV detection and ML classifier flagging. The presence of embedded URLs and the nature of the lure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://zajinet.ru/aws?utm_term=juz+30+download+muzammil
    • http://usesucre.pro/is_chief_petty_officer_a_high_rankohvpp.pdf
    • https://static.s123-cdn-static.com/uploads/4448115/normal_60056418290e6.pdf
    • https://cdn.sqhk.co/lexijunibul/siihgja/complete_book_of_world_war_ii_combat_aircraft.pdf
    • https://cdn-cms.f-static.net/uploads/4450350/normal_5fd78eaa65b45.pdf
    • http://teksalle.xyz/the_night_manager_season_1_episode_1_casteio4q.pdf
    • http://help-lnstagramcopyrights-verify.com/93541974389lavnv.pdf
    • http://lnstagramverifycentre.com/what_is_co-curricular_activities_in_educationv1rlb.pdf
    • https://cdn.sqhk.co/xanovika/fgfijjj/ewallet_uae_offer.pdf
    • https://cdn.sqhk.co/dijogiper/eGejejd/felemadi.pdf
    • http://suxoxaxowigab.scienceontheweb.net/berserk_manga_chapter_150.pdf
    • http://jedusajinud.mygamesonline.org/books_free_download_in_urdu.pdf
    • http://pek-24.cc/girl_scout_brownie_robotics_badge_requirements57atx.pdf
    • https://cdn.sqhk.co/fasisela/iihvjda/blue_birthday_balloons_images.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fc00cd34-7322-4dc6-8b26-4882007697a7/doduxonebet.pdf
    • https://uploads.strikinglycdn.com/files/0819d02d-8b2c-4f23-86fe-9588aeb4d8bc/saworuxenosiwat.pdf
    • https://uploads.strikinglycdn.com/files/53edb908-3e75-41c3-a560-e8c18268c982/buwemewawipawi.pdf
    • https://uploads.strikinglycdn.com/files/4d45ba92-9305-4ae1-afe6-82e5aa96397c/what_do_you_mean_by_bill_of_exchange_answer_in_one_sentence.pdf
    • http://moxadokikubod.onlinewebshop.net/15241608513.pdf
    • https://uploads.strikinglycdn.com/files/5b351992-72c9-4c9e-a61c-f2348b64cd48/give_me_liberty_chapter_23_outline.pdf
    • https://uploads.strikinglycdn.com/files/88bd2a72-512a-42cf-9be1-8b425b7fce20/ruvubaxipasexozejiwoni.pdf
    • http://namepafubi.atwebpages.com/64965581538.pdf
    • https://uploads.strikinglycdn.com/files/353d4248-baed-42e3-b560-9468a969c567/17422048579.pdf
    • https://uploads.strikinglycdn.com/files/4b8b2e14-51ed-456e-a502-9b2d5a0135e2/25191724764.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_off0000fdf2.bin
d11a23f34cb636c8bd2f99a39addf670b5976a289a779eef52dc179bade43b52		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF2 5136 bytes
font_01_sfnt_off00010f79.bin
99d323e585cf2652f6d6781be24ee51c82115fad2c28a5277562eb31ed115653		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F79 11200 bytes

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