Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c03a47a225d4736…

MALICIOUS

PDF

67.3 KB Created: 2021-03-01 22:28:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3e7c745f65154e0f0fe710c1a49c9ce4 SHA-1: c93c831f6d51e678130c4522e21a31fdc68ef2f7 SHA-256: 4c03a47a225d4736809e7dd9f504da163898e247c07d929074f6e828e53e89a9
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/wix?keyword=speed+acceleration+momentum+worksheet+answers PDF link annotation
    • http://job-finder.space/guzowuzamudajedanolazab0f.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/hdgfheb/jatamagebuzakeroxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413976/normal_5fe5d2a049a5c.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/idthhXx/boxeferodurekobojegu.pdfIn PDF document text
    • http://fomilexavekol.22web.org/25668340847.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/jKXidii/nimiraxozupuroridabu.pdfIn PDF document text
    • https://cdn.sqhk.co/xasurila/jehbii8/snake_puzzle_ball_solution.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427268/normal_601ba1c4a1580.pdfIn PDF document text
    • http://hh666o.site/gefebidibelijanibixikir5ry1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411700/normal_5ffba17194467.pdfIn PDF document text
    • https://cdn.sqhk.co/rogapakaler/gcgftAQ/vabuledapij.pdfIn PDF document text
    • http://pubgmobiie.com/ron_pope_fireflies_piano_sheet_musiczf3pc.pdfIn PDF document text
    • http://twitter-center.com/iron_food_items_in_telugutytus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_6027bf35d3fb8.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/dotivaf/radojazametuma.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/87324608725.pdfIn PDF document text
    • http://tufexulirepa.epizy.com/weather_report_bangalore.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/vegigazufufubexivi.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/gezenemubajumopunepafaf.pdfIn PDF document text
    • http://bupujipa.epizy.com/android_modem_software.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/kezij.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/2086791199.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_off0000cb9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9E 5572 bytes
SHA-256: 06befa84a882c8e998faf999c5d14d983eed7e1be8d1b05fe39825d9da579560
font_01_sfnt_off0000de78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE78 9708 bytes
SHA-256: 96359981f6433a495b485cdbd66a054a7642773c5409862514b8d0479e4f2138