Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb5dc118cbe30200…

MALICIOUS

PDF

64.6 KB Created: 2021-02-14 00:52:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 3df877de2e35f40b263ddc0e1c2592c6 SHA-1: e59f3c3d5747bd0f9b227f9441c2bda4403224d1 SHA-256: cb5dc118cbe302006706e52448417a7dfc56ffb5e3032ed5c28f5132044b726f
136 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
  • 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://druttle.ru/wix?keyword=osmosis+gizmo+answer+key PDF link annotation
    • https://cdn.sqhk.co/filodomazora/mgcgi6G/68737524640.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/paritilaza.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/cDWhhja/joriwigebuwix.pdfIn PDF document text
    • https://cdn.sqhk.co/jobiwokojo/ihdhhvh/57323456466.pdfIn PDF document text
    • http://zojulosopejozaz.iblogger.org/96061512548.pdfIn PDF document text
    • https://cdn.sqhk.co/xopigotax/idXjfii/push_and_pop_array_javascript.pdfIn PDF document text
    • http://remont-kholodilnikov.website/19100049283rpu93.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/ggjiHji/33269583004.pdfIn PDF document text
    • https://cdn.sqhk.co/besiwowegin/i1XbU0X/phase_10_card_game_buy_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nudotunaza/Jpichhf/pls_check_cashing_store_medford.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/lfjc4Cm/40914615280.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/glB3sie/90s_music_stars_male.pdfIn PDF document text
    • https://cdn.sqhk.co/duditizonut/geggvsj/learn_thai_phrasebook_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/zijenovivipax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nopexuwub.rf.gd/bozatufu.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_off0000c004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC004 5308 bytes
SHA-256: f0064714d0c8610194827f8cfbb9df02a77be700817e4b1d0391c47095b7f709
font_01_sfnt_off0000d219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD219 10472 bytes
SHA-256: dd252d80977a2f772de6bfd02bd8f5425ec3cee694a5c100e8a1a6a4c24717b1