Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4847a08d0c983ab…

MALICIOUS

PDF

72.9 KB Created: 2021-02-17 03:09:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 02e3ce24d3da43de7270be02c59ee562 SHA-1: dd612cdcce3aa854a71e7d4dadc2d0b265bd9652 SHA-256: a4847a08d0c983aba249be89b4354d60f89d5a321983dce7722fcaf6f68fca74
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=sq8+camera+manual+pdf PDF link annotation
    • http://ita-bio.space/legacy_of_heorot_series6tpsa.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/hfN6qMd/bosateridekebexu.pdfIn PDF document text
    • http://kekemubitaf.iblogger.org/eclipse_for_selenium_automation.pdfIn PDF document text
    • http://topplafond.xyz/belichick_record_against_former_assistantsjibjg.pdfIn PDF document text
    • https://katodelof.weebly.com/uploads/1/3/6/0/136051175/xibitewananam-wevuzawutuk.pdfIn PDF document text
    • https://sinitilelimokiz.weebly.com/uploads/1/3/4/3/134348988/4723452.pdfIn PDF document text
    • http://8gusevshop.space/poweraudio_pro_music_player_reviewi2ktk.pdfIn PDF document text
    • http://lenorimageb.iblogger.org/vector_background_banner_cdr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://memaded.epizy.com/kiloo_subwaysurf_zip.pdfIn PDF document text
    • http://karajifaderiwow.epizy.com/complejo_antigeno_y_anticuerpo.pdfIn PDF document text
    • http://gidigeja.rf.gd/college_board_sat_study_guide_2020.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD587 5192 bytes
SHA-256: 34826513cadca7b22ffd36ef5aa6c9cea72d81a069853c7b7d8807f89a465084
font_01_sfnt_off0000e705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE705 9936 bytes
SHA-256: 1ece04abaf309ad86d73ae4fd63f4640cce5ebda04ca0f8f3142cd22cd9a16de
font_02_sfnt_off000108c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361