Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf314a48257b9f7…

MALICIOUS

PDF

66.0 KB Created: 2021-02-21 16:58:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b90cb75ee71f58c212172bcab71daad8 SHA-1: de06a2c366f16f4a5327e6f2c637be7e922dd3c8 SHA-256: ecf314a48257b9f77d167da37f2bff04b57a19a9601d0f3141633b7fc433571c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://druttle.ru/wix?keyword=super+bowl+2020+free+printables PDF link annotation
    • http://formblckr1.xyz/thinking_out_loud_music_videoyotlk.pdfIn PDF document text
    • https://dirasikazeta.weebly.com/uploads/1/3/1/3/131379856/52ee56d47c263e8.pdfIn PDF document text
    • https://sirewuri.weebly.com/uploads/1/3/5/2/135298631/d7e0c60143eb02b.pdfIn PDF document text
    • http://milanomoda-italy.site/gaming_monitor_for_xboxqzknd.pdfIn PDF document text
    • http://axecheat9.xyz/mafubokedonetaxep6co5d.pdfIn PDF document text
    • http://vehicleusains.com/automotive_technology_a_systems_appruh0j6.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuzigup/jgijHNa/fancy_french_names_for_cats.pdfIn PDF document text
    • http://vertigoa.online/desh_bhakti_song_dj_remix_mp4f9roy.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/icBidmP/guilty_conscience_meme.pdfIn PDF document text
    • https://goluluvofa.weebly.com/uploads/1/3/2/7/132712214/sesuwixasepi.pdfIn PDF document text
    • https://cdn.sqhk.co/ropikenetu/8wGmhc6/spacex_starship_hop_test_today.pdfIn PDF document text
    • http://pressit.space/63127047565ivjuz.pdfIn PDF document text
    • http://mir23.xyz/30390641448rjjuc.pdfIn PDF document text
    • http://yewes.space/novation_launchkey_49_mk3_priceokw8s.pdfIn PDF document text
    • https://cdn.sqhk.co/lawipavoso/fdIxTsm/werabofu.pdfIn PDF document text
    • https://cdn.sqhk.co/puwupasakej/2z1iggi/art_for_kids_hub_star_wars.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/wunojipu/dreamweaver_tutorial_sinhala.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_off0000c5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C2 5504 bytes
SHA-256: ef26c29a489bdabe19102618e93c382aa59694fa5134710c28fc5530d8ac8520
font_01_sfnt_off0000d895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD895 10156 bytes
SHA-256: 35c76b91490e93c84f6d5beb069602a2b8ed0b703fa41234c624d25f2601979b