Malicious PDF — malware analysis report

Static analysis result for SHA-256 f92e623cae4b57aa…

MALICIOUS

PDF

68.7 KB Created: 2021-03-02 16:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c753b756a7bd4f7b7f18acd47ebf3ea8 SHA-1: 03254c603ac6e5c883dc2b43fe4e36ecdca12be6 SHA-256: f92e623cae4b57aaeef7a0cd7f25f5b1b91f7aec3b1f61c6246711889fa85fde
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://baarspo.ru/wix?keyword=let%2527s+be+rational+investigation+3+answer+key PDF link annotation
    • https://vubisurajoguv.weebly.com/uploads/1/3/4/2/134265568/ritar-rekekiwamivajet-sugefowapun.pdfIn PDF document text
    • http://madewithsunshine.com/laser_and_feelingsr2n8a.pdfIn PDF document text
    • https://cdn.sqhk.co/vikaxokaso/hjzn1hc/island_h20_live_water_park_orlando.pdfIn PDF document text
    • https://rowemuvirota.weebly.com/uploads/1/3/6/0/136089617/kekatolinato.pdfIn PDF document text
    • http://copyrighthelpptteam.com/chrono_cross_musickm73i.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/phgj4hc/ponunenipuge.pdfIn PDF document text
    • https://cdn.sqhk.co/kupuruvew/gigeiav/25043756602.pdfIn PDF document text
    • http://axecheat1.xyz/debimubumon64isb.pdfIn PDF document text
    • http://love-cosmetics.shop/924081969698jqrh.pdfIn PDF document text
    • http://kyhni.site/kijebg0hh9.pdfIn PDF document text
    • http://vevemogijip.22web.org/vunoxatalofozigodoluziwa.pdfIn PDF document text
    • https://gusefokujugox.weebly.com/uploads/1/3/4/0/134040973/7693cc8668.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bupinobofuv.rf.gd/uniformly_accelerated_particle_model_worksheet_4.pdfIn PDF document text
    • http://tafobinememen.epizy.com/pleural_fluid_cytology_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/44655570497.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/lojuzivori.pdfIn PDF document text
    • http://nepogewapiw.epizy.com/baar_baar_dekho_1080p_video.pdfIn PDF document text
    • http://dutagewenurodub.epizy.com/ledatup.pdfIn PDF document text
    • http://bavidatesudujig.epizy.com/youtube_to_avi_divx.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_off0000cb8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB8A 5452 bytes
SHA-256: 6fc4613c524cb3bf81895554dad5ebdd9422557b03d8b74849b196a6ab8b99b5
font_01_sfnt_off0000de53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE53 11248 bytes
SHA-256: 25bd5c34364704a8fe539f14ea3f358f3873bb916f7b0504d672814677f4af96