Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d934884133fa4c7…

MALICIOUS

PDF

72.7 KB Created: 2021-03-01 18:05:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fb45ddde01fb81f2b094b19967ef6ed4 SHA-1: e805d56e70021f8857924baa939ef952a2d53161 SHA-256: 4d934884133fa4c75a2059c6476095370c03b05a9d440e6198f5979f99594d4e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/wix?keyword=best+phr+study+guide+2016+pdf PDF link annotation
    • https://cdn.sqhk.co/guzoladip/wHiG1ie/xesalowawilitizuvex.pdfIn PDF document text
    • https://cdn.sqhk.co/bugolajoxodu/Xri9Rjb/video_repeat_loop.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/ihgghbE/canada_cash_gift_tax_rules_cra.pdfIn PDF document text
    • https://cdn.sqhk.co/wemofisejaf/ROLopwI/tropico_6_nintendo_switch_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/zolokike/gjYuNib/92284820725.pdfIn PDF document text
    • https://cdn.sqhk.co/mivoteloxip/jhuCDjc/free_impulse_response_loader_vst.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/browning_hi_power_mark_ii_vs_mark_iii.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/77479799584.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/37577653077.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/jddjLFx/59263272801.pdfIn PDF document text
    • https://cdn.sqhk.co/wukibezoso/jjhjQyI/suwijevo.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/kupixajopanivob.pdfIn PDF document text
    • https://cdn.sqhk.co/ledirevobep/U9qFsie/fajol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nakeviw.myartsonline.com/40812626315.pdfIn PDF document text
    • http://wadoromutisagar.myartsonline.com/sidim.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_off0000e09f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09F 5692 bytes
SHA-256: 82cbbfed7589312e8c79a724f7dad6fb13134b703a7e101a4d61b40051fde101
font_01_sfnt_off0000f417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF417 9880 bytes
SHA-256: 4a734cef5bac6ba4e4e3e5f896a09c2d0436826bfa004abb72b979586d45742f