Malicious PDF — malware analysis report

Static analysis result for SHA-256 9839992fff1c9ee8…

MALICIOUS

PDF

72.9 KB Created: 2021-02-24 05:23:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 94582d62b63cd51043793c4fb548f540 SHA-1: d55e81c99bcb0a0000b830211745b2c5af2eb7a9 SHA-256: 9839992fff1c9ee8149c5fdfc01376e3b7deac798d93688a28b7229286f48c9b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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=sour+oranges+strain PDF link annotation
    • http://mklhhhh.space/23269906567fc8id.pdfIn PDF document text
    • http://plsale.pro/ejercicios_de_tablas_de_multiplicar_salteadas_para_imprimirx1ep5.pdfIn PDF document text
    • http://itawegan.fun/ffxiv_samurai_pvp_guidew3lw0.pdfIn PDF document text
    • http://excellent-spb.ru/83803737050pfr99.pdfIn PDF document text
    • https://fenazimo.weebly.com/uploads/1/3/4/4/134437137/mubaduvefe-lotamuz-jelivogedewijo-temaxolikavisem.pdfIn PDF document text
    • http://keto-menu.online/fonopunusonabadujerewc6yj.pdfIn PDF document text
    • https://cdn.sqhk.co/wotirixa/AHjg5hj/79495856950.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/jepavilutabilel/73183973030.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/huawei_smartwatch_gt_faces.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/congressional_research_service_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/69794793655.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/free_genogram_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/wadobibifo.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/isotherm_map_worksheet_answers.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCCB 4924 bytes
SHA-256: 88ecfeb6e310dabeedd30f513cb3ba46a5b96dce01e5a1404bb923bf1d531d0e
font_01_sfnt_off0000cd91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD91 3624 bytes
SHA-256: 45e12a8faa0c2abe9bccb41a4f0a8263ed249307f8c5ffba0d72f44e50511a81
font_02_sfnt_off0000dbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBC 10776 bytes
SHA-256: b6c09699fe8550c394ecc0b4728d169a8e23369ee5f2fdf5ab40041a79dc4323
font_03_sfnt_off000100c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C1 16300 bytes
SHA-256: fb349172d89b0fa2413409f4d6e24f5ac758b5875c0128d1afb6e684716084e4