Malicious PDF — malware analysis report

Static analysis result for SHA-256 a661f11a45d07a3f…

MALICIOUS

PDF

76.2 KB Created: 2021-02-19 21:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6eeb39d27923d34dc52a97b21487b4cf SHA-1: 8b417bdbbbac67a9d3171c48fc8449e23ffd3c19 SHA-256: a661f11a45d07a3f2addab99f7596a8101f234a4d1c88f9639a51f858f0b2a5d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://seumenha.ru/123?utm_term=yamaha+p255+88-key+professional+weighted+action+digital+piano PDF link annotation
    • https://cdn.sqhk.co/votojuxosaf/9c2Jjie/planet_waves_locking_tuners_staggered.pdfIn PDF document text
    • https://cdn.sqhk.co/lewonuvaxu/PZ1dZia/tadijutixekubimo.pdfIn PDF document text
    • http://loveantravel.xyz/cisco_anyconnect_4._6_linuxvn0an.pdfIn PDF document text
    • https://sezorataxij.weebly.com/uploads/1/3/4/6/134600708/loremuzagobuzek_sigirijepazo_zesigomufolixa_bipegedaw.pdfIn PDF document text
    • https://tupewolukup.weebly.com/uploads/1/3/0/8/130813866/jameziw.pdfIn PDF document text
    • https://cdn.sqhk.co/wukibezoso/NFeheYe/linuvano.pdfIn PDF document text
    • http://setlyb.online/55321343152bpnca.pdfIn PDF document text
    • http://irisca.online/astro_on_the_go_mod_apk0d5vb.pdfIn PDF document text
    • http://trickyturkey.com/81708523667xy8cu.pdfIn PDF document text
    • http://serdyukov.pro/45413835792r4n9h.pdfIn PDF document text
    • https://cdn.sqhk.co/goronikel/8hhihcz/spotlight_movie_theater_cordele_ga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_601d843c48659.pdfIn PDF document text
    • https://susemozud.weebly.com/uploads/1/3/2/8/132814624/sotasu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479235/normal_601eda5267a63.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/tigewibejageju/megejobalobijelonilane.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/xalaki.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/tebovigaverobovijidi.pdfIn PDF document text
    • http://bixojal.rf.gd/nccn_gastric_cancer_guidelines.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_off0000eba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA0 6272 bytes
SHA-256: b4bfe1935cf7a9ebdac77bcca0e2dc9105cbdaa36a3c0e7541df2e32bbc550f1
font_01_sfnt_off000100f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F9 10032 bytes
SHA-256: 5599b20744e77430282997cc6ea0058d04964a8026117dd2fe7e9175ba3befaf