Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9bad493ec61235…

MALICIOUS

PDF

70.3 KB Created: 2021-03-01 08:05:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 353272f022f69d4b18c34c572174c5b1 SHA-1: c9dc367563f09322ec5c77b298709414e98c03b3 SHA-256: 1f9bad493ec612358703394a06639dbe84356bf6f1fd49bc60ac6cbe20a3a368
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://jumiwimov.ru/123?utm_term=social+media+marketing+for+book+publishers PDF link annotation
    • https://mimudokax.weebly.com/uploads/1/3/4/7/134742140/84748.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/76181118565.pdfIn PDF document text
    • https://nolaxefipox.weebly.com/uploads/1/3/4/7/134740184/sonagizif-nisimone-melolumekekawe.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/ejercicios_de_lectura_y_comprension_para_tercer_grado.pdfIn PDF document text
    • https://povurumupun.weebly.com/uploads/1/3/4/8/134884194/1177247.pdfIn PDF document text
    • https://gitumakiwu.weebly.com/uploads/1/3/1/4/131437138/zavunevugorur-bafuso.pdfIn PDF document text
    • https://kesizibewasi.weebly.com/uploads/1/3/0/8/130813921/4cb987bdf23.pdfIn PDF document text
    • http://buluzapigal.22web.org/what_is_the_theme_of_cinderella.pdfIn PDF document text
    • https://kunisalopug.weebly.com/uploads/1/3/4/3/134315348/lugorebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://komomikadexep.rf.gd/menomeged.pdfIn PDF document text
    • http://bugenerefajujus.atwebpages.com/16054228350.pdfIn PDF document text
    • http://tebuwawezizafes.onlinewebshop.net/dyson_v6_motorhead_replacement_battery.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/pokemon_soul_silver_nuzlocke_guide.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/7979008805.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/how_do_i_reset_my_canon_mx492_ink_cartridge.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_off0000d63e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63E 5876 bytes
SHA-256: c451ff116766177e3481e5ff59696ac11559ddcaa78913311d4dfe60fac71c8a
font_01_sfnt_off0000ea18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA18 10092 bytes
SHA-256: 0be401802437b22faf77744ea059e7b5f6694f87adf06ba23f90ec79e9c3080c