Malicious PDF — malware analysis report

Static analysis result for SHA-256 633adf1403e89947…

MALICIOUS

PDF

73.5 KB Created: 2021-02-06 23:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 61e37f8c6a4da450ffc758fd263eecb8 SHA-1: db5ef5fcc2372a2beeb6e7c21d62b1bad587142b SHA-256: 633adf1403e899471e45bcfbb963b53676ca9fbdb2878fdd68073351ff2a66a4
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/wb?keyword=liquefied%20gas%20tanker%20safety%20guide PDF link annotation
    • http://visionnew.xyz/gekemomezimvqttg.pdfIn PDF document text
    • http://nigma24invest.online/unicorn_flashlight_led_upgrade981cj.pdfIn PDF document text
    • https://cdn.sqhk.co/lasetipulos/iajahdu/dan_the_man_apk_download_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/fBstijP/list_of_smart_prepaid_promo_2020.pdfIn PDF document text
    • http://svoylend.xyz/cms_ed_medicine_listdn5va.pdfIn PDF document text
    • http://beautysss.site/78665508328129qu.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/pugomonapoxuxe/48555369546.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/wavizawe.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/15170299143.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/formal_dresses_nz_stores.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/mejezomebizisera.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/49220101373.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/juwawojofunidowefibu.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/zaxetotisewufebaruge.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/56064147730.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_off0000df33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF33 5276 bytes
SHA-256: 67835d8c3c908d2aff075e72b1c7f7927a424d8edbe1cb5a4180d17e87c58169
font_01_sfnt_off0000f147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF147 11292 bytes
SHA-256: b39e3fe13689f015c3f2b088c4724e06d4310b4074a487001d5bcaf739589b57