Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bbdf1d307f3b6d6…

MALICIOUS

PDF

76.8 KB Created: 2021-02-01 03:18:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: da78d7c9200f2ef2fcadef0914cc2659 SHA-1: 70cedcf44d23cda9617801a72df5be4099bd9f5e SHA-256: 0bbdf1d307f3b6d6126e27edda608b950317bae557e64cf476a63bf5573c493a
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=%25C2%25BFcu%25C3%25A1ndo+es+el+final+de+kara+sevda In PDF document text
    • http://lnstagramverifiedsbadgeforms.com/4958162192sztrq.pdfIn PDF document text
    • https://cdn.sqhk.co/kapideto/i9Yigjb/wurokomidu.pdfIn PDF document text
    • http://prognoz-football.club/problemas_de_termodinamicahyag2.pdfIn PDF document text
    • http://thedefenseforge.com/why_did_we_storm_the_beaches_of_normandy4z1r3.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/kvgfwaD/esl_play_rocket_league.pdfIn PDF document text
    • http://topuniversityru.fun/757860013712itdz.pdfIn PDF document text
    • http://vknart.xyz/analog_synthesizer_tutorial872ze.pdfIn PDF document text
    • http://wirelosine.22web.org/grade_9_english_textbook.pdfIn PDF document text
    • http://idealsit.fun/kozogegi2xa8k.pdfIn PDF document text
    • http://fenellalucynelle.info/3501318325k0ho3.pdfIn PDF document text
    • http://domastmsk.space/13354440155630ho.pdfIn PDF document text
    • http://avtoshkola-region26.ru/granny_square_crochet_blanket_tutorialymzzs.pdfIn PDF document text
    • https://cdn.sqhk.co/zezaxemepe/hcpw7hh/fantasy_town_name_generator_dnd.pdfIn PDF document text
    • https://cdn.sqhk.co/kizulajeli/Lieiige/84322938104.pdfIn PDF document text
    • http://air-calm2.club/dibujo_tecnico_examenes_de_selectividad_tomo_2c4i7b.pdfIn PDF document text
    • https://cdn.sqhk.co/kewusikata/xVtichi/zunijokigeboga.pdfIn PDF document text
    • http://milanbeach.fun/hidden_escape_lost_temple_walkthrough_appunwrapperi5f0f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://midelex.epizy.com/52837474085.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_off0000ec7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7C 5416 bytes
SHA-256: 8314df17f300f5b51a9b6e1800ebf22502162b359aea8519129b9cd48d27bcc8
font_01_sfnt_off0000fe72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE72 11520 bytes
SHA-256: 0716fe4d25b9f5cad0a31f1f3552bda4c5bc7524e0b2976452a97b343bdd2246