Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbad8b1ba7e3c801…

MALICIOUS

PDF

72.9 KB Created: 2021-02-26 20:16:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aaca94f44af946b2549b1ce599cdcae8 SHA-1: 215e561a5f08af3f9bae0e72ac4732b24349fcf5 SHA-256: dbad8b1ba7e3c801727bd2047631f2fd61ddb1261a802deee6714cdcbf55f5a8
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kuzutuzo.ru/award?keyword=paper+clock+hands+template PDF link annotation
    • https://wojanoxunoliwam.weebly.com/uploads/1/3/5/3/135394081/bawevare.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/rofawewazo.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/cieieij/97924733874.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/0vU2Z81/sisters_apparel_butterfly_collection_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/wolanojijen/gc8lacw/wikuduwo.pdfIn PDF document text
    • http://italysummer.fun/rizzoli_and_isles_season_6_episode_listuqfo7.pdfIn PDF document text
    • https://daniwevuwawudo.weebly.com/uploads/1/3/4/8/134849628/raverufaleg-gibapot.pdfIn PDF document text
    • https://gupebuxoguwev.weebly.com/uploads/1/3/4/3/134381402/kupozememarino.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447267/normal_5fd198f7cde48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393356/normal_6005c20b24b19.pdfIn PDF document text
    • https://zisatusomet.weebly.com/uploads/1/3/4/8/134872515/6277357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444649/normal_5fca847826181.pdfIn PDF document text
    • http://fionainthefield.org/psychology_in_everyday_life_4th_edition_free55wrh.pdfIn PDF document text
    • http://larebalin.mypressonline.com/scag_tiger_cat_belt_replacement.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/tazopaju/perosen.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_off0000e07a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07A 5380 bytes
SHA-256: 022c8609573273217a917f117d5bec1d025f584b525116beaacac5bfd152328e
font_01_sfnt_off0000f293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF293 10676 bytes
SHA-256: 9c74500294a77767444b7f317305234e506df82636bfcc727e2db05a8f802d9b