Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d554296c4856b47…

MALICIOUS

PDF

69.7 KB Created: 2021-03-10 00:29:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b1a3e9cab23379ad9ba541f08157da30 SHA-1: 971bfef7d815e683ae4298a7dd2228a1334581f1 SHA-256: 6d554296c4856b47d67c2e063fec28a97efa5fdfc7ccc17f33c1a6e8abbc194d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/award?keyword=chordate+zoology+book+pdf+download PDF link annotation
    • http://pidawudimo.scienceontheweb.net/tin_tin_chinese_restaurant_monroe_ny.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxisilogok/Smw5s8I/vuwobekekuxejeguxofa.pdfIn PDF document text
    • https://cdn.sqhk.co/dilizilozok/hievWia/rope_bottle_holder_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/geyQpXz/clash_royale_stats_api.pdfIn PDF document text
    • https://cdn.sqhk.co/torazanopuni/hfhiHhb/buy_bitcoin_with_ebay_gift_card.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/jjmjcgj/pic_this_word_picture_search.pdfIn PDF document text
    • https://cdn.sqhk.co/jesarijufe/OAjhhgw/80247687677.pdfIn PDF document text
    • https://cdn.sqhk.co/guwezasov/AjfghIR/burger_king_hiring_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/melobokodijo/KYm4Igg/zamawezifokojukam.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/yrnhhhe/20484777265.pdfIn PDF document text
    • https://levevuwakute.weebly.com/uploads/1/3/4/9/134904524/96195b2269dff.pdfIn PDF document text
    • https://numurivigafezu.weebly.com/uploads/1/3/4/3/134390613/4627239.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/ifyWUjh/61152076773.pdfIn PDF document text
    • https://kejuzeke.weebly.com/uploads/1/3/4/4/134456394/rozer.pdfIn PDF document text
    • https://cdn.sqhk.co/pijajawopoji/2zSkLia/telugu_ringtones_2020_music.pdfIn PDF document text
    • http://nanonewe.scienceontheweb.net/miwunim.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/RTiijfj/geluporazerovenifilowavaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://78bdfa25-736e-4945-a764-db21511aacb9.filesusr.com/ugd/9bd82e_445a069e10794986a62ea301ca779e0b.pdf?index=trueIn PDF document text
    • http://kulebosux.myartsonline.com/hamilton_beach_18_quart_roaster_oven_ham_recipes.pdfIn PDF document text
    • https://a0a5ada1-270c-452f-b092-d943fc6f0dc0.filesusr.com/ugd/306762_997e1a5cfd8d4469b7aaa62fc6999ffa.pdf?index=trueIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_ca00dd1ddda24e79bc67f95afbab4160.pdf?index=trueIn PDF document text
    • http://gumizaxewa.atwebpages.com/washington_state_university_basketball_coach.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_off0000d19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19C 5480 bytes
SHA-256: c60ffca946911bcef6a1621be7d928e2bb109fd1362b83c0e3faa3f1bf83d386
font_01_sfnt_off0000e451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE451 10504 bytes
SHA-256: 365fd259839edba1eac70288083bd55dd63832e9a145897d779e72c03bbef1c8

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