Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3eff17dd7eb20ed…

MALICIOUS

PDF

40.4 KB Created: 2020-11-05 20:07:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 8d72d13a05c99b3b225d37b125d5dd35 SHA-1: 41406167b4440e9972ebfab94d0fc396552dd081 SHA-256: c3eff17dd7eb20ed719568f71d5a2262d6321a6881b07867e953ce15a79621ec
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafficel.ru/123?keyword=google+drive+sing+2016 PDF link annotation
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/9add130e6ae2665.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/napuzo.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/notif_xodum.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/tomaladeva_famesugopafixa_lapikeka.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/bagaden.pdfIn PDF document text
    • https://videxopefofima.weebly.com/uploads/1/3/4/1/134131768/7712558.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vigevot/65202737549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afd396e8-e945-4c25-ac97-4714919bd736/zelafukivatufubisad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7e5028b-7d99-40ca-baf5-9f5a2096c251/13814183729.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/13041152862.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32453731-01cb-4d27-994e-c195e8ca066d/fiche_technique_dun_joueur_de_football.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/mexovikiza.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D99 5060 bytes
SHA-256: 3c9df16d83ab458995b1c647b257aa788e55831a21f964e7a51e5744f146e466
font_01_sfnt_off00005ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE5 11504 bytes
SHA-256: 07ab1dbabee800662bf25f9bd47209a2163b35a468827110b9f90f845f53775a
font_02_sfnt_off00008505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8505 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34