Malicious PDF — malware analysis report

Static analysis result for SHA-256 9946e31845db33a0…

MALICIOUS

PDF

71.8 KB Created: 2021-02-12 01:10:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 86fac293a9e8b6c2a859a67203b6471f SHA-1: 792eafc714336f5ce41cb0a3d15c39f84da15e87 SHA-256: 9946e31845db33a07f65a4df17d7a11e75412cb79532555218ee5a2cc3409ed5
184 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
  • 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://crophysi.ru/wix?keyword=rainier+beer+caps+answers In PDF document text
    • http://8gusevshop.space/dog_bubble_gum_seizureavn5y.pdfIn PDF document text
    • https://zavowajasobi.weebly.com/uploads/1/3/1/4/131406950/61993e348bba3ee.pdfIn PDF document text
    • http://bitsracing.net/94577028368uu9i7.pdfIn PDF document text
    • https://valodoxajub.weebly.com/uploads/1/3/4/4/134435871/zolonija.pdfIn PDF document text
    • http://huseyincanx.com/wugosa1nakj.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/legend_of_zelda_skyward_sword_guide9619l.pdfIn PDF document text
    • http://opensucre.pro/wopepuzuxuloripugw9jnu.pdfIn PDF document text
    • http://online-bestshop.xyz/474249928050ed75.pdfIn PDF document text
    • http://detixaluziweki.22web.org/tuluwadajuvifosasel.pdfIn PDF document text
    • http://instapriz24.online/2.dereceden_denklemler_kolay_testtzyxe.pdfIn PDF document text
    • http://shtancircul.site/rozaxekejuv39m9.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://fozovevozasox.epizy.com/android_dolphin_browser_cache_location.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/wedekuwuniwajuritisen.pdfIn PDF document text
    • http://dululelafekupas.rf.gd/marukajawibonerunedikek.pdfIn PDF document text
    • http://ragidunu.rf.gd/cia_torture_report_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/bimimegukovezejilam.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/brush_lettering_practice_sheet_free.pdfIn PDF document text
    • http://jexonuwunow.epizy.com/kewabaxezulerafe.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/duradudamijorukavodeg.pdfIn PDF document text
    • http://fewetero.epizy.com/rizeda.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_off0000d11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11F 4732 bytes
SHA-256: bcc776c222ff5d20c925635108166f63cccf88503b61f02a504777d2effeb95e
font_01_sfnt_off0000e136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE136 10140 bytes
SHA-256: 257dfff2f613fb0d555a59477425b52733b40665fd4fe79547c5d6c3b9f6c567
font_02_sfnt_off00010406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10406 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378