Malicious PDF — malware analysis report

Static analysis result for SHA-256 103d10bfeb467764…

MALICIOUS

PDF

67.0 KB Created: 2021-03-04 06:51:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 79d27987d11b3ae0f7e3dbb26c19d2eb SHA-1: 105ef16377000f079a482e0eb75384ab44518553 SHA-256: 103d10bfeb467764dff85e9d3b0ed2d251d156dfface294594685815db833436
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://crophysi.ru/award?keyword=bluejacketeer+free+for+corpsman In PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_603d3e37e451b.pdfIn PDF document text
    • http://faxixovojaja.sportsontheweb.net/93310920824.pdfIn PDF document text
    • http://jelelegukawox.22web.org/dagax.pdfIn PDF document text
    • http://itravelimpressions.com/animal_farm_summary_chapter_47rgum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446790/normal_6002ec933dff4.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/riwisinunepivom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415946/normal_603a86e374194.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472776/normal_5ff6561eb4b79.pdfIn PDF document text
    • http://xoxosedefoxadu.mygamesonline.org/alpine_cda_9884_bluetooth_adapter.pdfIn PDF document text
    • http://fegivate.medianewsonline.com/46001145469.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/saziwijaxodav/brand_authorisation_letter_format_for_flipkart.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/2875096181.pdfIn PDF document text
    • http://vekejuf.atwebpages.com/porobasozoz.pdfIn PDF document text
    • http://kusababi.onlinewebshop.net/4655267204.pdfIn PDF document text
    • http://vewawisu.onlinewebshop.net/star_wars_books_canon.pdfIn PDF document text
    • http://rolonitefokive.rf.gd/1848957321.pdfIn PDF document text
    • http://gigezevozaf.epizy.com/annamayya_telugu_movie_full_songs_free.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_off0000ca73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA73 5352 bytes
SHA-256: 7b6713d27a921f6a23d4a89b8dbfb0709db90571422772f7f165eab2ee2b017b
font_01_sfnt_off0000dc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9E 10140 bytes
SHA-256: 16764b198210920ff3700a65728375733cb648d633b9819997095a4a0f6fb372