Malicious PDF — malware analysis report

Static analysis result for SHA-256 0caedac2ed533dd9…

MALICIOUS

PDF

72.8 KB Created: 2021-03-01 19:07:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 42d5b9258cb8a4fcb104d094a9b0e70f SHA-1: 293f844b9294880d4ddc2ecc5656c98b3464918c SHA-256: 0caedac2ed533dd920c75846aee408c99d915e636515c23d3ce46a91eaaff14f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/award?keyword=blank+100+question+answer+sheet+template PDF link annotation
    • http://organicsss.space/lididoseyypyr.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/qqughgh/complete_mathematics_for_cambridge_igcse_solutions.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwuvume/je8ig4D/12864371130.pdfIn PDF document text
    • https://nokaroropufut.weebly.com/uploads/1/3/1/4/131453144/vuvuvijuwotak.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/PM5pwif/16893403603.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/dPi8gdW/61356001769.pdfIn PDF document text
    • https://siwevamad.weebly.com/uploads/1/3/1/8/131871433/wedibinap.pdfIn PDF document text
    • http://fitokaps.xyz/delta_shopmaster_scroll_saw_parts8prq1.pdfIn PDF document text
    • http://tb-films.ru/waxaniwufovoxijujx2nb.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/how_do_you_create_a_safety_management_plan.pdfIn PDF document text
    • http://greatmasters.biz/bumatirejesl2ggm.pdfIn PDF document text
    • https://cdn.sqhk.co/jagojixego/gjiqij5/five_nights_at_freddy_s_4_game_scratch.pdfIn PDF document text
    • http://uplrezina.site/zafaxojomeraboxipapirumas2z4iy.pdfIn PDF document text
    • http://peludofnor.fun/47223986802fkwv3.pdfIn PDF document text
    • http://wumomotetidofe.getenjoyment.net/how_to_connect_powerline_1200.pdfIn PDF document text
    • https://vanosejifewufe.weebly.com/uploads/1/3/0/8/130814052/torip.pdfIn PDF document text
    • https://cdn.sqhk.co/mivijigonof/Oibgjgj/companion_8_band_saw.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvukidovime/uzCidJY/53648049495.pdfIn PDF document text
    • https://giponijas.weebly.com/uploads/1/3/1/4/131453823/2635631.pdfIn PDF document text
    • http://vegifeda.mypressonline.com/how_to_prepare_for_a_behavioural_and_competency_based_interview.pdfIn PDF document text
    • http://s7hmus.org/rental_agreement_template_free_texasaq536.pdfIn PDF document text
    • http://rasidafepu.mypressonline.com/the_song_of_ice_and_fire_book_6_release_date.pdfIn PDF document text
    • https://gemitipob.weebly.com/uploads/1/3/4/4/134474898/lobidu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dfa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA8 5584 bytes
SHA-256: 4312ccf1d0fa5177740025cd5143e10e7018c4d4fa5b950af3e3ff963ed55e49
font_01_sfnt_off0000f295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF295 10356 bytes
SHA-256: ca23721a47a377d1c3136d3b0cd4f02dadc1829ed2c2f0a19296cf3170662464