Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dfe18ee6e3d278d…

MALICIOUS

PDF

76.5 KB Created: 2021-02-26 14:07:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c6dbd1f3b9b58dc60f674d7107888f3c SHA-1: 53eba6e5ca95b3ea1c3d8db4e86b79dcea1bcaae SHA-256: 0dfe18ee6e3d278ddbced4ce718edc50b40f1ffc0c8847ea8d186b6d78db9104
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gimoguvi.ru/aws?utm_term=2+way+radio+shoulder+holster PDF link annotation
    • https://cdn.sqhk.co/busibelifiv/ghvuxgg/21278676657.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/SCihYhg/nbc_sports_app_authentication_error_fios.pdfIn PDF document text
    • https://cdn.sqhk.co/mixekuwuvo/0jhjiGp/military_strategists_quotes.pdfIn PDF document text
    • https://cdn.sqhk.co/midipijikami/eXhaVyU/hyrule_warriors_characters_list.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/kiigdKZ/miui_system_launcher_app_drawer.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/change_master_code_on_vista_128.pdfIn PDF document text
    • https://cdn.sqhk.co/nomavunut/zjajZha/denoruvonozasunezaxoxasu.pdfIn PDF document text
    • https://wegidakalulat.weebly.com/uploads/1/3/5/3/135337254/xoluguzanav-vobugiletarapo-nosefaru-pixaxewexitari.pdfIn PDF document text
    • https://dewajijivixire.weebly.com/uploads/1/3/4/6/134638152/bojara.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/bejikefowu/kogijazuxuxupi.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/tumerut.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/38729504457.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/coliform_bacilli_treatment.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/adobe_premiere_rush_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/35195999686.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_off0000edd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD7 5144 bytes
SHA-256: e06cd0384841cd38edf59578a247f5084ddc3381e501fc9136fca8b1cda0df74
font_01_sfnt_off0000ff60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF60 11404 bytes
SHA-256: 61c7c0f4f342e67d20e7f4080b8c666d29077fbc2c616866f9bc915b671d34c8