Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b112090e9eb796…

MALICIOUS

PDF

73.4 KB Created: 2021-02-07 06:16:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 571bf7f39f4c6884ce2695759442424e SHA-1: 86467469c25275ccb0a3d92e3b5e90d164fecca9 SHA-256: d7b112090e9eb796259e6f289aa7e67186867745acd3ff02cd385b15eb330849
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wb?keyword=facebook%20messenger%20free%20%20from%20google%20play PDF link annotation
    • http://sberbank.services/81589980100rwc8n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477369/normal_5fceefe12f900.pdfIn PDF document text
    • http://mishgen.com/revista_boticario_ciclo_4_2019gmdkp.pdfIn PDF document text
    • https://cdn.sqhk.co/jifegusewe/WMkCmjd/39508677645.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/Vgj2Xnd/vogoparamopegujaxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464710/normal_601f325074836.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/ih8WBz7/19133160368.pdfIn PDF document text
    • http://bighome.space/80595708945ejnys.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jejotatimub.rf.gd/exercice_orthographe_ce2.pdfIn PDF document text
    • http://moraruvotu.epizy.com/simplifying_exponents_worksheet_algebra_1.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/fly_agaric_trip_report.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/abortus_adalah.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/beside_the_seaside_sheet_music.pdfIn PDF document text
    • http://daxafedijumexir.rf.gd/parebamo.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/how_to_show_dividend_in_balance_sheet.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_off0000e18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18B 5596 bytes
SHA-256: 041b04ff709f9be12b406c873e903321b068fb23d8a32c9c279baaea361227ff
font_01_sfnt_off0000f48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48A 10660 bytes
SHA-256: 9802f12ef6f11f24ab5d9925dc706b5131c5b7d6009f2cbec79fc0a1bbb8e472