Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da295ba8aa879a4…

MALICIOUS

PDF

64.9 KB Created: 2021-02-12 08:37:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3a934dfe1db500e4e9b192fbc5626c54 SHA-1: 5bc2ce046d530f18e1e2a39d9affbb966883c5e8 SHA-256: 6da295ba8aa879a4b444e607b2e65d5fa3bf55c2903552c74d903fd15bf9ded4
314 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • 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://crophysi.ru/wix?keyword=innova+3160+instructions In PDF document text
    • http://montana-media.com/english_christian_songs_audio_free1kbei.pdfIn PDF document text
    • http://particulier-societegenerale.xyz/30501136098xvaef.pdfIn PDF document text
    • http://milanbeach.fun/rosepalue9ujx.pdfIn PDF document text
    • http://apple-fruit.space/bridal_shower_invitation_email_templates63k0p.pdfIn PDF document text
    • http://usesucre.pro/gunoxedetesezabexisagixaxs08v.pdfIn PDF document text
    • http://thailandlove.site/memanumugipavosojus0tag.pdfIn PDF document text
    • https://zanobevaduj.weebly.com/uploads/1/3/2/6/132682049/sigezibox-xutunukab.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/xeropizuwe/bandura_s_social_cognitive_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/guardian_angel_song_let_it_shine.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/intercontinental_hotel_group_annual_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/13320963319.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/manikine.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/epf_malaysia_annual_report_2017.pdfIn PDF document text
    • http://tezafafowajij.epizy.com/mijogudenafirexevob.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/whatsapp_messenger_for_lenovo_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/77554263692.pdfIn PDF document text
    • http://femodizabofowu.epizy.com/37732792165.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_off0000b72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB72D 5032 bytes
SHA-256: 95cd55dec37a1eda2c1ea2063cdc6c9229e0477a5a8b316918109690d0bd51f0
font_01_sfnt_off0000c84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC84A 9516 bytes
SHA-256: 10a88a9e2a4c40da4776ee2018c5e3eb5e4d1884be8daf451e836ec39a44c476
font_02_sfnt_off0000e8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DE 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3