Malicious PDF — malware analysis report

Static analysis result for SHA-256 1859c795d1057c43…

MALICIOUS

PDF

71.2 KB Created: 2021-02-20 22:14:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 19dfb09a69623c9759b89ab2652f02a2 SHA-1: f9c291c1cfb4582ae6e52f46f8f38f4f4be5cca6 SHA-256: 1859c795d1057c43e3238f622e9d9af72e19004e32740cc9193af28d80781c15
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://baarspo.ru/wix?keyword=surgical+fixation+of+a+joint PDF link annotation
    • http://dom-bita.org/brian_decosta_workouty2gmw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423429/normal_5ff2862975a96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488570/normal_5fe2596b81fd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485573/normal_5fef490321ebc.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/amhejao/74583123642.pdfIn PDF document text
    • http://faceit.su/visafefifaj3nbcz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469119/normal_600d32636c5d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450635/normal_60004551ec23a.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/AGhfHhc/cheapest_flights_from_glasgow_to_london_city_airport.pdfIn PDF document text
    • http://siondez.ru/23918437714lmoky.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495860/normal_5fcbaa79d1a6d.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/juminiwoduwipibigogaa9w8n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447646/normal_60118cf82a5f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380858/normal_60011535e75f7.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/iwcvage/dwyane_wade_daughter_kaavia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d95f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95F 5120 bytes
SHA-256: 7abb7a019e37a2ed4d3256f235e3aa854241e89efd9baa7397d8fa2a8ef0421b
font_01_sfnt_off0000eaee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAEE 10700 bytes
SHA-256: 0c9ec330ad6921fb55cae8e6df891da1f956feef8c5dd78ce8baab8ccff469aa