Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b821e703b7a0222…

MALICIOUS

PDF

64.8 KB Created: 2021-02-18 00:37:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 145e61d9b563578de7022646224db4da SHA-1: 48417936388745f4d2281f0e36cbc247d4764a64 SHA-256: 5b821e703b7a022258c1fccee195a9cdf086b3e861eadcd8b91a0f1e94f8b1d1
126 Risk Score

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://druttle.ru/wix?keyword=encyclopedia+of+electronic+circuits+volume+4+pdf PDF link annotation
    • https://cdn.sqhk.co/vefuwebilux/zjg4jj1/61418088178.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/xhaeWgj/4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409798/normal_6026dd9ba4bbc.pdfIn PDF document text
    • https://cdn.sqhk.co/dopuwene/ghjwYWI/dragon_quest_dai_no_daibouken_2020_opening.pdfIn PDF document text
    • https://cdn.sqhk.co/tusifixebug/9rXn2gg/slices_pop_up_windsor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485689/normal_600e725f4b38f.pdfIn PDF document text
    • https://cdn.sqhk.co/norumuwapa/ifVLgcy/73330496763.pdfIn PDF document text
    • https://cdn.sqhk.co/sikudile/Kibjgjg/79435727783.pdfIn PDF document text
    • http://natezaka.iblogger.org/nurse_practitioner_job_description.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392191/normal_5ff918c112d43.pdfIn PDF document text
    • https://cdn.sqhk.co/lonubugogere/ia1jh4n/gravity_falls_memes_funny.pdfIn PDF document text
    • https://cdn.sqhk.co/regomesu/gogfJgh/37168433996.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bodudubabafixe.rf.gd/guzowutakamapeli.pdfIn PDF document text
    • http://mesitineka.rf.gd/novatevemaf.pdfIn PDF document text
    • http://tivogowajap.epizy.com/pajanusagevatefaxula.pdfIn PDF document text
    • http://xafamikipu.epizy.com/valentino_24k_gold.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/dvt_anticoagulation_guidelines.pdfIn PDF document text
    • http://wivowutone.epizy.com/coniugazione_del_verbo_chiamare_nella_forma_attiva.pdfIn PDF document text
    • http://wubulinefoz.rf.gd/64733659214.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_off0000bd49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD49 5508 bytes
SHA-256: 251e9ed032857cbe09e4f4e0f636739969428e50ffd2fe3715f1b87fafde5df1
font_01_sfnt_off0000d00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD00F 11448 bytes
SHA-256: 186affd634fa32aba545da3ee4e64a8068633a1417577af2fd7fd8be9f0078fa