Malicious PDF — malware analysis report

Static analysis result for SHA-256 391c075cc6fcff51…

MALICIOUS

PDF

71.3 KB Created: 2021-03-04 06:00:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5bf022b05a59dd3740993af059434eb3 SHA-1: b740dd509de5c49dc990881ee6590969edf09ca2 SHA-256: 391c075cc6fcff51ae9ef1840bcdbb73f009dbf76fe1d504a657485b564d8435
126 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
  • 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://maypoin.ru/award?keyword=present+perfect+exercises+pre+intermediate+level+pdf PDF link annotation
    • http://megatorg.ru/suzuki_cello_book_4_song_1k88ki.pdfIn PDF document text
    • http://artrosil.xyz/67425044241q83b.pdfIn PDF document text
    • http://dombitarf.ru/21119695955j7bjl.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/fidabur-wamejizosakovix-sixokoguxiwep.pdfIn PDF document text
    • http://paganel.world/brooke_shields_pornjmgfk.pdfIn PDF document text
    • http://samyog.ru/john_deere_350_dozer_service_manualv0e94.pdfIn PDF document text
    • https://kopomitesukov.weebly.com/uploads/1/3/1/4/131453216/1067759.pdfIn PDF document text
    • https://xutafutixon.weebly.com/uploads/1/3/4/5/134576274/kajixim.pdfIn PDF document text
    • http://myfoxing.online/zodiac_signs_amazing_factsxr6vg.pdfIn PDF document text
    • http://spiritstudio.ru/10697123324dpdg3.pdfIn PDF document text
    • https://cdn.sqhk.co/sezepemanu/Ijaidck/smart_connector_ipad_pro_keyboard.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/jhfHWje/90244663261.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/gkYhhGx/telepathy_meme_hearts.pdfIn PDF document text
    • http://okrasote.info/93680025403axbxv.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/sgchihi/cross_linking_mass_spectrometry_protocol.pdfIn PDF document text
    • https://cdn.sqhk.co/gunakawujo/cIiiJhK/wibebu.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/lakujusitejojet/24681225768.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/zoritidotonifotadu.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/clariant_chemicals_annual_report_2018.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_off0000dae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE0 5428 bytes
SHA-256: 5df72498cc0943f00d7ee3de9714627dd800112ba2777a3916e760499d4abe85
font_01_sfnt_off0000ed4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4C 10048 bytes
SHA-256: d563223d0e8f7ada1c682b9261b55a19cf769907376bff386dc00007697a6fb1