Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2079c83b88d907a…

MALICIOUS

PDF

83.6 KB Created: 2021-02-24 21:32:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: ffdb1236c8603c0022ca4e0e514ff710 SHA-1: a1e68ec714e43374f2ae5eb23db9174fdb6965e2 SHA-256: b2079c83b88d907ae4c6401cd2c29d1c797f510b522cb81cc550631786e6cd32
184 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
  • 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://yafferge.ru/award?keyword=botticelli+map+of+hell+explained In PDF document text
    • http://modernstyle.pro/91900375191xwj28.pdfIn PDF document text
    • http://numulul.mygamesonline.org/87333847806.pdfIn PDF document text
    • http://ipoteka.net/73526323931wul4v.pdfIn PDF document text
    • http://gemubanabugawa.mypressonline.com/best_book_for_gate_mechanical_engineering_2020.pdfIn PDF document text
    • http://kanugodojavuwiv.22web.org/sigegonofebut.pdfIn PDF document text
    • http://reduslimitaly.website/via_hd_audio_6.0.11.1100_downloadinbyz.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/robin_hood_movie_2018_actors.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408599/normal_5ff8517fe465a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369919/normal_602becee004e0.pdfIn PDF document text
    • https://gidixelasulam.weebly.com/uploads/1/3/0/7/130739099/6837461.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://moxozejoxolisuf.epizy.com/sitiregebi.pdfIn PDF document text
    • http://goxoloxegaw.epizy.com/bhojpuri_gana_video_ing_full_hd_movie.pdfIn PDF document text
    • http://magajavopisili.epizy.com/96123441046.pdfIn PDF document text
    • http://jababonulet.epizy.com/mefudepigixopug.pdfIn PDF document text
    • http://mizozibobekujul.rf.gd/non_fiction_book_template_ks1.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_off00010b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0B 5236 bytes
SHA-256: fba0448739e42aa2a323c2484ff380b28d7f1da58e638200e0376432b5420f59
font_01_sfnt_off00011cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CC2 11208 bytes
SHA-256: 04ec9a4bf823576e662276a79da7983faa184599532fe356fc77bd8aec3507b0