Malicious PDF — malware analysis report

Static analysis result for SHA-256 20bb15f03cc93c8f…

MALICIOUS

PDF

76.3 KB Created: 2021-02-11 09:54:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9809e9949b4df55252dec162eb06f41b SHA-1: 08037bd97181506b074e055cb16748d5b77399d7 SHA-256: 20bb15f03cc93c8f199c91c328b2dfac2bee7a842df79bf6f940032f211cf940
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=lettering%20templates%20pdf PDF link annotation
    • http://rotepojisox.iblogger.org/bollinger_bands_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/heifWhc/kebinewoborobona.pdfIn PDF document text
    • http://kpovli.ru/picture_editor_app_macs6ie9.pdfIn PDF document text
    • http://robertferrell.net/yume_nikki_dream_diary_achievement_guideb4nig.pdfIn PDF document text
    • https://cdn.sqhk.co/vunalogivefu/fAjbmhc/free_starz_weekend_2020_directv.pdfIn PDF document text
    • http://sayseedokg.com/war_planet_online_mod_apk_downloadyfwkz.pdfIn PDF document text
    • http://abwaab.su/filmywap_2016_hollywood_movies_in_hindiyy12w.pdfIn PDF document text
    • http://rocketdocs.us/smart_launcher_3_pro_apkpureb235p.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/kovozenamofox/pomowekanedorimejokupe.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/4liker_instagram_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/belize_tourist_map.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/donation_return_envelope_template.pdfIn PDF document text
    • http://rilefijej.epizy.com/ringtones_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/audio_bible_telugu.pdfIn PDF document text
    • http://zetafilutebes.rf.gd/salagi.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_off0000ef97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF97 5300 bytes
SHA-256: 28bc070d91fa28318f9a8c837448f9a06e284d769c139ffd8ecea05b1482f47c
font_01_sfnt_off0001018d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018D 10280 bytes
SHA-256: 1da71118f16d03189c1ef7cb47ab33d6beb345ecde467144ee421a1d4d0f4dd4