Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f81f510060e9662…

MALICIOUS

PDF

62.1 KB Created: 2021-01-03 19:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 72aef5ce424c825d402d218413bd4f69 SHA-1: a31f0302ab591072b71e554bfd1d007c1654273a SHA-256: 1f81f510060e9662dafaa8f277bd0e7a427f61efa96868b88e7f68ed052951e2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/123?utm_term=ryobi+cordless+trimmer+line+replacement In PDF document text
    • https://cdn.sqhk.co/sivunukiwe/fEJhgv5/costco_potstickers_in_air_fryer.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/TkwU7oo/84602005136.pdfIn PDF document text
    • https://cdn.sqhk.co/rodesedaded/vHgc85i/nafitavetumejijojataluzup.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/nekin_purawesi_tilixasamog.pdfIn PDF document text
    • https://ligibumifi.weebly.com/uploads/1/3/4/6/134647936/8508346.pdfIn PDF document text
    • https://tezexitebab.weebly.com/uploads/1/3/4/6/134600353/7200845.pdfIn PDF document text
    • https://cdn.sqhk.co/narobalof/omijkia/silusizemut.pdfIn PDF document text
    • https://vejegiraforid.weebly.com/uploads/1/3/4/3/134311029/80b7936.pdfIn PDF document text
    • https://xasananixekoweg.weebly.com/uploads/1/3/4/4/134442195/7959728.pdfIn PDF document text
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/cabd7f5029.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/sakaburepagase/apple_id_spam_email_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/play_games_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/84214283776.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/ranger_blood_warmer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cad66ff-c97e-4fab-a86a-f0670fb17cbe/riseserapawijezusuzu.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_off0000b735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB735 5468 bytes
SHA-256: 304c3f0af2ae39d6701df80410529582810cc31a60989f4458f4ef4e5cd67042
font_01_sfnt_off0000c9bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9BB 9948 bytes
SHA-256: 972db3157d1b2f0c28d579358092ea724fcd529b536ee526835757385c539ce7