Malicious PDF — malware analysis report

Static analysis result for SHA-256 38833f7017d731ae…

MALICIOUS

PDF

70.4 KB Created: 2021-03-06 01:09:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9f0325a39afc8a96b07d35972f1f830c SHA-1: de052cb44b2b2ec7efc16dcd8b72996b9c991d41 SHA-256: 38833f7017d731ae834766fee9686ff114d21e3b9a1d11e13e05ab5c4fb50afa
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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.
  • 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://crophysi.ru/award?keyword=starbucks+blended+beverage+routine In PDF document text
    • https://cdn.sqhk.co/lopijikuvi/hhDoJLC/36565678944.pdfIn PDF document text
    • https://cdn.sqhk.co/gasupewu/FZbLihh/balenciaga_triple_s_clear_sole_white.pdfIn PDF document text
    • https://cdn.sqhk.co/sebelokili/gfhifzj/angry_neighbor_free_download_android.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/jihaPhe/tufujujixafawuwepivazixi.pdfIn PDF document text
    • https://kadukutinebi.weebly.com/uploads/1/3/4/7/134747046/luwip_gapevujubijek.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/8H3geha/fagixodo.pdfIn PDF document text
    • https://gukufevekexuse.weebly.com/uploads/1/3/5/3/135305262/gezibigezeweso.pdfIn PDF document text
    • http://rimaloxal.22web.org/66089551821.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/hfigrja/super_smash_bros_all_dlc_character_trailers.pdfIn PDF document text
    • https://rovagurepuj.weebly.com/uploads/1/3/1/8/131856033/vobujipozu_givoruxawolapi_tatebebutojafo.pdfIn PDF document text
    • https://cdn.sqhk.co/gipagigo/hGhi36L/fine_line_coloring_pages.pdfIn PDF document text
    • https://jezipupokegem.weebly.com/uploads/1/3/4/0/134042816/lenotile_gukaviduferelal_gexitixomuk.pdfIn PDF document text
    • http://vejawezodasupax.22web.org/80956756621.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/fSyIhf2/starcraft_cheats_multiplayer.pdfIn PDF document text
    • http://wuwisometojone.66ghz.com/soundtrack_drama_korea_hotel_del_luna.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/purufiz/inherited_vs._learned_behaviors_worksheet.pdfIn PDF document text
    • http://fojufofe.rf.gd/63466908156.pdfIn PDF document text
    • http://darajakejaxise.rf.gd/mawegulesowepuvupe.pdfIn PDF document text
    • http://pegewolonu.rf.gd/malt_lymphoma_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/26665807931.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/60350116179.pdfIn PDF document text
    • http://kasamikapumumo.epizy.com/biwolu.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/90853709383.pdfIn PDF document text
    • http://kirogebi.epizy.com/vpn_android_netflix_free.pdfIn PDF document text
    • http://biwomilorawud.rf.gd/35216886420.pdfIn PDF document text
    • http://wanigag.rf.gd/how_much_do_security_guards_make_in_the_philippines.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_off0000d3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D5 5476 bytes
SHA-256: 19961b4e040bceddd5895ba838373f8b55d9fdae79e70381946f6dafb79e5bc3
font_01_sfnt_off0000e685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE685 10312 bytes
SHA-256: 362a4adc890550ed7cedf54d5049e9a7d05f87713fc197237ca6461ad42b0aa2