Malicious PDF — malware analysis report

Static analysis result for SHA-256 c985a326aba01a6e…

MALICIOUS

PDF

79.5 KB Created: 2021-03-01 13:30:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e4a305a73c48e30be7b1ad5087d5c721 SHA-1: c7eae9ac54cef74ab38a232a5cbc1f547f42bbcb SHA-256: c985a326aba01a6e7e4f6babebfe487841bbdb869a966a4c137e0dc50a22cdd8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=beat+the+market+maker+pdf+download PDF link annotation
    • https://cdn.sqhk.co/ripalufix/ighbx13/the_crossing_guard_application_philadelphia.pdfIn PDF document text
    • https://fuwupizur.weebly.com/uploads/1/3/5/3/135390256/muxirejagup.pdfIn PDF document text
    • http://igbusinessabouthelp.com/cheran_cholan_pandiyan_movie_songs_freej8mnm.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/4bZYiaQ/cookie_dough_maker_game.pdfIn PDF document text
    • http://zefujixa.mywebcommunity.org/ssr_side_by_side_170.pdfIn PDF document text
    • http://akvatehnika74.ru/52856425122n4se7.pdfIn PDF document text
    • https://cdn.sqhk.co/rodofusavivi/ieibzVz/vofikigudekudewusibo.pdfIn PDF document text
    • http://fixmarker.fun/how_to_learn_mandarin_language_for_freehresg.pdfIn PDF document text
    • http://goossyy.online/77073628742lz5v.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/jUgiVp7/84689442988.pdfIn PDF document text
    • https://cdn.sqhk.co/fobonelaga/h87qYgi/84140804169.pdfIn PDF document text
    • https://musisemikalig.weebly.com/uploads/1/3/4/6/134694348/8729281.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pulutugorivexek.atwebpages.com/collins_easy_learning_spanish_dictionary.pdfIn PDF document text
    • http://vunonam.atwebpages.com/who_is_candice_king_in_after_we_collided.pdfIn PDF document text
    • http://bagugexasorip.myartsonline.com/15567647462.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F1 5308 bytes
SHA-256: 572a13e338cdb9db63bb58e7a952b20a02e9faa7ef77e6c3dc5e3587ec72686f
font_01_sfnt_off00010be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE9 10936 bytes
SHA-256: d11a37ebdc5dc151df76248ff328319d1a5c10a8f10cd7d76824e39f626ebe89