Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8dbe052574521b7…

MALICIOUS

PDF

73.1 KB Created: 2021-01-31 14:52:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 83644e208d6e5db822b982595ecb1e2b SHA-1: 9a71f9a6ae99f49cad891147064de659753560a9 SHA-256: a8dbe052574521b72be3ec60e2207f4331a7989731a07f97e957dc5f50ace4f8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wb?keyword=free%20movies%203s%20on%20xbox%20one PDF link annotation
    • https://nokajadum.weebly.com/uploads/1/3/4/8/134887388/pakomir-paduxaredep-tujowuguzenero-lorekaditometug.pdfIn PDF document text
    • http://best-store.club/shawn_mendez_torrentrgspi.pdfIn PDF document text
    • https://sixalusizefew.weebly.com/uploads/1/3/1/3/131378898/sivuva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465941/normal_5fe3c0a3f3721.pdfIn PDF document text
    • http://jobauthor.online/38010792822lj70m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487632/normal_6004087182ea3.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/hbheb4F/world_table_tennis_champ_mod_apk.pdfIn PDF document text
    • http://alexsaf.ru/8467606228q4hvv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369150/normal_5fe3ae07ca67a.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/vibuvomomuv/55514997896.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/lagewanujetewekabexo.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/senigovofexuzama.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/jack_o_lantern_templates_free_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/bonafide_letter_format_company.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/blue_black_wallpaper.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_off0000e20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20E 4976 bytes
SHA-256: 6bc479ac94bd56b8aa6d90cfbe8002ff3939fc6728942be806508039182c3536
font_01_sfnt_off0000f2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F3 10868 bytes
SHA-256: 98976e55b2c76aea971482ccb210322fe3e60749ea88d2a6e2b42ba10a9b036f