Malicious PDF — malware analysis report

Static analysis result for SHA-256 920b485bcc22457d…

MALICIOUS

PDF

63.8 KB Created: 2021-02-20 16:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 144f68d8484a0687be1e2669660255fd SHA-1: 64b74a5738f76c4827f8b413f47aba44c279aadd SHA-256: 920b485bcc22457dedd3bc9da0f2adf5d59e89243c9b3cbf24f672780d9e99c6
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=husqvarna+440+chainsaw+owners+manual In PDF document text
    • https://rizigavitud.weebly.com/uploads/1/3/4/5/134581125/rejug-savonajurivarug.pdfIn PDF document text
    • https://poxobavu.weebly.com/uploads/1/3/1/4/131453713/kanesawux-berug-muruzapinotuko.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/jFifpje/xuzunitowabovazabes.pdfIn PDF document text
    • http://shop50off.info/monster_hunter_world_iceborne_wiki_espanolyerap.pdfIn PDF document text
    • http://naturagrush.space/xobosiguluwenonbcqp.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/8jaKvBX/toy_blast_hack_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/igii9ih/pacsun_cyber_monday_code.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/7jghDhc/gojadubugemopimu.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/qgjjjqK/ouroboros_fullmetal_alchemist_significado.pdfIn PDF document text
    • https://cdn.sqhk.co/rubovadu/tiigh0Q/survival_guide_zombie_apocalypse_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/agWgcgc/mojejimitowum.pdfIn PDF document text
    • https://vofesoxofibebup.weebly.com/uploads/1/3/4/9/134900141/b3cf9b.pdfIn PDF document text
    • https://pesuzipowezav.weebly.com/uploads/1/3/1/6/131636843/1402018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dotiribene.epizy.com/peronewideranagomaw.pdfIn PDF document text
    • http://zarilapaserit.rf.gd/black_baby_boy_names_that_start_with_a_j.pdfIn PDF document text
    • http://xovimed.rf.gd/bowers_wilkins_p7_manual.pdfIn PDF document text
    • http://vezavajizuvos.epizy.com/android_vs_iphone_x.pdfIn PDF document text
    • http://nigojelur.epizy.com/carti_beletristica.pdfIn PDF document text
    • http://golofupatawef.epizy.com/nomewixadus.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_off0000b9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C6 5508 bytes
SHA-256: c6cf934c6fdbff885722c743783b60da5f8f855c37601737773f70d90359717d
font_01_sfnt_off0000cc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC75 10620 bytes
SHA-256: ef1ee37552930e0cba843376387e15c4d7f243f28889be1d0f3731f07ca90626

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