Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0db5aec117eac4a…

MALICIOUS

PDF

72.7 KB Created: 2021-02-04 10:25:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 93677ab1f569f558907cd7592f0efe85 SHA-1: eda754c9628311dc562aa9b40255ac49fceb5d73 SHA-256: c0db5aec117eac4a4a17775a9499bdd8abfec352afbac4999d0d656faacc8055
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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://jottigo.ru/wb?keyword=tekken%20game%202018 PDF link annotation
    • https://rerutafedebe.weebly.com/uploads/1/3/2/8/132815298/wodofi-bazimer-satisigaxivimak.pdfIn PDF document text
    • http://grusha.space/mozozabefofoz3y09.pdfIn PDF document text
    • https://rataputi.weebly.com/uploads/1/3/1/4/131407353/4942426.pdfIn PDF document text
    • http://starconflict-game.ru/60500396588cnsex.pdfIn PDF document text
    • https://zanomegujinax.weebly.com/uploads/1/3/4/8/134873542/towogifojilonup.pdfIn PDF document text
    • https://jebovemedafo.weebly.com/uploads/1/3/0/8/130813903/8182096.pdfIn PDF document text
    • https://xalovediluf.weebly.com/uploads/1/3/1/3/131380345/mumotem.pdfIn PDF document text
    • https://kasapumaf.weebly.com/uploads/1/3/1/3/131397987/25c5345e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ladorum.epizy.com/alice_in_chains_unplugged_album.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/nipapoligutabatevu.pdfIn PDF document text
    • http://zuwapiw.rf.gd/change_background_color_android_activity.pdfIn PDF document text
    • http://rojolegov.epizy.com/frozen_invitation_card_maker_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/sesibiraruvulevuvadudok.pdfIn PDF document text
    • http://tebuwibuweni.rf.gd/endless_love_movie_foumovies.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/dupav.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_off0000df61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF61 5232 bytes
SHA-256: 2184b59492cd5610d5dc8e17320a60c0143bbc8d4e384cd888ca483cc4a38aca
font_01_sfnt_off0000f12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12C 10816 bytes
SHA-256: 3244deeef39051c6ebd32341414ebdff4af41b9f5d376244550b6b729b5cf927