Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1a9e535746528b…

MALICIOUS

PDF

65.2 KB Created: 2021-03-01 21:04:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0eaceee938ced817d18ab27257262976 SHA-1: 1108e1dd4c96ebd7ec4a24474ff8a344fb7b3285 SHA-256: 9f1a9e535746528b0a7de1b824abb34df0011faade861855f4f29f5a7358ad28
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://soxebez.ru/wix?keyword=unblocked+games+burrito+bison+revenge PDF link annotation
    • https://cdn.sqhk.co/jojikoxazew/bjanhit/block_story_unlimited_diamonds_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_6029ccacef4c0.pdfIn PDF document text
    • http://makedctl.site/is_oral_b_pro_expert_toothpaste_any_goodnhz6h.pdfIn PDF document text
    • http://tiktoktop.design/symbolism_worksheet_middle_schoolomgs7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377717/normal_601c663cc55c5.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/stock_character_in_the_way_of_the_world.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426815/normal_5fd04b40da967.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/hFrjglN/no_man_s_sky_xbox_update_2020.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/78533219640.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/lomuper/cuisinart_airfryer_toaster_oven_issues.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/bodoland_university_ma_form_fillup_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/firefox_android_disable_pop_ups.pdfIn PDF document text
    • http://pikaderobiw.atwebpages.com/50053103380.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/harlan_coben_safe_episode_guide.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_off0000c33c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC33C 5512 bytes
SHA-256: 4394e9f70a5dc25c343ed5af3f1189421117e4bdbbf74de287f5df75d25ea70e
font_01_sfnt_off0000d5ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5EA 9928 bytes
SHA-256: aca08098b747ac1a8fe875ad0aa5b529c657b937a426ae9b7c283c31bd96334e