Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c16a6b14215a6bb…

MALICIOUS

PDF

68.1 KB Created: 2021-02-28 12:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 89425fac2265caeaddb8aa6759b1e23f SHA-1: 110d662aa7f42ad0498b6828a30f43ad3d4247a6 SHA-256: 9c16a6b14215a6bb9ac6efd81ceb9ec3d2598d149eb06043a8d0233780bfc533
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/wix?keyword=eoc+review+packet+math+1+answer+key PDF link annotation
    • http://cosmeteca.com/total_gym_xls_vs_fitpknu6.pdfIn PDF document text
    • http://verification-help.business/42468511533w3may.pdfIn PDF document text
    • http://kvrovk.xyz/schma_narratif_de_la_rempailleuseqlx0i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443823/normal_5ff662ed0ed1c.pdfIn PDF document text
    • http://tacfitproducts.com/lexudagilobubikejanepozatvbw1.pdfIn PDF document text
    • http://solent.bar/fililjcpem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388280/normal_603824831813a.pdfIn PDF document text
    • http://hookup668.site/borowexuzusukofomk8d64.pdfIn PDF document text
    • http://onlinetiser.website/algebra_1_big_ideas_math_student_journal_answersl5798.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/25984783211.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/navefenutajenatowovez.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/z_table_critical_value.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/40th_bcs_online_form_fillup.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/junozixofosetutufifatulek.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/lozidedatujelipipo.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/bendito_el_dios_y_padre_lldm.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/79106071492.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0BF 5256 bytes
SHA-256: 106e366d219e39647365ca55acdfd789935d9e8cf2078e7f753f63ca2e6c372c
font_01_sfnt_off0000d289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD289 10188 bytes
SHA-256: 5c87621aa462e96d65a10aecb9afc290960b87fb2c19abc649ca72297ff27bfd
font_02_sfnt_off0000f531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF531 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f