Malicious PDF — malware analysis report

Static analysis result for SHA-256 73a5095b2a649896…

MALICIOUS

PDF

70.0 KB Created: 2021-02-02 13:13:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 28550f7ec20da3ed87895670c778fc7b SHA-1: a67161eea2ba1160c3ecc55bab1d448e77b3f4f5 SHA-256: 73a5095b2a649896b77f2bc2dfe58c06430db9841f77aae03a7b9105120118f4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/aws?utm_term=crime+report+map+las+vegas PDF link annotation
    • https://lawilutimi.weebly.com/uploads/1/3/4/8/134879912/penawek_wivuripevibewe_zapemed_wurexawitipe.pdfIn PDF document text
    • https://wejobufobugof.weebly.com/uploads/1/3/5/3/135348322/ranizojoke_bukolurubewaz_refuwafa_fewavolip.pdfIn PDF document text
    • https://tozusasulinun.weebly.com/uploads/1/3/4/8/134872335/387073.pdfIn PDF document text
    • https://cdn.sqhk.co/wupifufexix/VAibbhd/kuletoxafipafonepisoxeki.pdfIn PDF document text
    • https://cdn.sqhk.co/bozogekeji/gRiiifM/mexico_simulator_2_hack_apk_all_cars_unlocked.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/jfVgdMI/48372100179.pdfIn PDF document text
    • https://febotobelem.weebly.com/uploads/1/3/0/7/130739539/ec4e999f269fafc.pdfIn PDF document text
    • https://dizakevusarebiz.weebly.com/uploads/1/3/4/5/134581037/591164b3261411c.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/bWOKphe/konekaso.pdfIn PDF document text
    • http://best-store.club/logic_grid_puzzles_printable_with_answers53sy3.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/chhjcTz/best_music_player_app_download_for_pc.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/lorugipopuxe/ll_bean_maine_guide_parka.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/vivido.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/ragozubukujamikelosaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/kosodozoruxomajuxunewakuv.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_off0000d4be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BE 5104 bytes
SHA-256: c0d72a2f63f84c2f120434de63ca32acb02c397aeb3386d873b17f446dac4de0
font_01_sfnt_off0000e606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE606 10972 bytes
SHA-256: 62e2304ac42d0b1548c0a2398471158e626b4c24a25e33e2442ca08b7fda51cc