Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f8f1407f497527…

MALICIOUS

PDF

78.7 KB Created: 2021-01-29 11:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 81cc7b1c6bf775543d5eca4db77761bc SHA-1: 21b45813a5b2b07938d563d70ed696ee876cc560 SHA-256: 05f8f1407f497527a1663ad482725c3793d36af0f9bd5a3f5d7597e07169d41f
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://leonvi.ru/wb?keyword=legends%20of%20runeterra%20patch%20notes%201.%2011 PDF link annotation
    • https://cdn.sqhk.co/wuvupalib/hchJe5K/grass_cutting_machine_toolstation.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/jhJTgf5/fuweloxuvulizejufilab.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/dbhzgdV/65427523385.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/goW90gc/zimujif.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/cylhcqe/296642047.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/aOjehhZ/the_silent_age_game_review.pdfIn PDF document text
    • http://ijmalan.xyz/ballpoint_pen_brush_photoshopu8gih.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383165/normal_5ff0d943b20f7.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/ijb1Mif/gutofobitiweboxuwabijaki.pdfIn PDF document text
    • https://cdn.sqhk.co/lilanoto/8hhdidb/icy_hot_ingredients_pregnancy.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/huEja80/nika_riots_worksheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468289/normal_5ff21c8f6de9d.pdfIn PDF document text
    • http://islemleriniz.org/lenovo_ideapad_duet_chromebook_za6f_128gbj3h8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474218/normal_5fd89fbb8fa6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382414/normal_5fe57d8781a6d.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_off0000f566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF566 5408 bytes
SHA-256: 3dda7cdf05aafa68a5882b95b3ce8be693691bc05eae3fa43ee4c6dde3d7f25e
font_01_sfnt_off000107db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DB 11248 bytes
SHA-256: dc165c9aa3cad76daab97fb11ce7d938f86a363cc1f2ceea9a927c419cd8eda7