Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e66ff1a6d30bba…

MALICIOUS

PDF

77.0 KB Created: 2021-04-01 18:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 81b35a8b5c0beec75576656b9add95c1 SHA-1: 9eaff0a3b1930de14a0bf2587d9fb2524edb1e23 SHA-256: 95e66ff1a6d30bbace7689e097b8a73c23ea1fd5b6864cb451b354709627e0a9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with several pointing to disposable hosting and exhibiting link farm characteristics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://mezovuduw.ru/aws?utm_term=skyrim+mod+xbox+one+best PDF link annotation
    • http://lnstagram-helping.live/50702700809i6bme.pdfIn PDF document text
    • http://ig-mediateam.net/who_writes_the_construction_phase_health_and_safety_plan8mglm.pdfIn PDF document text
    • http://bukapim.mywebcommunity.org/deadpool_kills_the_marvel_universe_1.pdfIn PDF document text
    • http://masterpowerpoint.com/vilekuratofefemj4tk3.pdfIn PDF document text
    • http://maxist.ru/significant_figures_practice_worksheet_w_316_answersdlpb8.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/catalizadores_automotrices.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/gizubukubexusugabusikif.pdfIn PDF document text
    • http://bikokobolo.sportsontheweb.net/ampelite_fibreglass.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/jivagajamav/zunidojozufunogatomek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21a12257-29e6-4132-aa44-58fd063d4222/kiraramagevujelovefibilan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b159093-e4fd-41b7-9aed-fafac4b58edd/47960143658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8cb3a4c-b931-49b4-90a5-5cccb06d9cbb/does_magic_bullet_cups_fit_nutribullet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4601737-e190-4056-8672-912aba7b6154/16264961405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e8bf266-912a-49d6-b209-bfd110f19e37/nenolavubaripavizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20199fd9-1822-4711-8f5b-560747d789b3/bupazabiruwij.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/fortnite_week_6_challenges_guide_season_4.pdfIn PDF document text
    • http://bexovivuvere.myartsonline.com/zerajomironuv.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/problemas_resueltos_porcentajes_2o_eso.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_off0000ee81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE81 5208 bytes
SHA-256: e6ba579ddb62fcce53d18fa61b0403c08403989902cfc940d6ed0f71b2abeb6c
font_01_sfnt_off0001002c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1002C 10928 bytes
SHA-256: fbd49f10f0f7f558737f08fc9e67c579b24653f38c4eb3d7ac2b9599099a7538

Open this report in the interactive analyzer, or submit your own file for analysis.