Malicious PDF — malware analysis report

Static analysis result for SHA-256 075b8854f2d30800…

MALICIOUS

PDF

70.6 KB Created: 2021-02-26 19:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 86a8b49232054b4ffe25adf4116ff32c SHA-1: 5e5a15d0306b8edd177280e9e75c750ca22e288b SHA-256: 075b8854f2d308008bdbecc4384a896e51f011a17f8e221d49f1357a7e986f3b
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=kill+the+thief In PDF document text
    • http://azakalaza5.xyz/boluvorudnpt50.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/mdGhgjy/86895836171.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386836/normal_6010b7600fb06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_601c8a785db84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365547/normal_5fed554c21dd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381756/normal_6007a636b59c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498801/normal_603690248c521.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/50917852667.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/68357553405.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rodedewezijore.atwebpages.com/repulomaxajeraguvekoputaw.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/how_to_draw_a_dragon_easy_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/past_simple_vs_present_perfect_exercise.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/arteriovenous_malformation_of_uterus.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/very_best_whatsapp_status.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/pumukevulijele.pdfIn PDF document text
    • http://fajazimigig.atwebpages.com/najuxaludej.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_off0000dc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC80 4340 bytes
SHA-256: 5c32effe8bbb173091e0d196d5e1d83b84df8d1491431ac47f17c4ea0b3c313f
font_01_sfnt_off0000eb4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4A 10148 bytes
SHA-256: 0811dc2837a73e92cecfa2ad6d192c8d3872d0664f121a324cccc0f33c4809c4