Malicious PDF — malware analysis report

Static analysis result for SHA-256 28931c6ede6109b1…

MALICIOUS

PDF

75.4 KB Created: 2021-02-08 23:41:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 90808df42365bf9442b0234bbe555d4f SHA-1: 071fade3834f8e31cc0be7f6464f9285bb1b6f12 SHA-256: 28931c6ede6109b16448f3472bec3a684341a28122278935f4a690f6f6083b1b
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://maypoin.ru/wb?keyword=parasitic%20diseases%20of%20cattle%20pdf PDF link annotation
    • https://cdn.sqhk.co/jipogidara/ibpieji/fosurawalusufirimivibevez.pdfIn PDF document text
    • http://adminhalil.com/mometez8cds.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/jaLtpYE/world_war_1_complete_history.pdfIn PDF document text
    • https://cdn.sqhk.co/pivifilogopa/4jiL0jf/fozukazonutigedaravo.pdfIn PDF document text
    • http://datinge.site/949188749912izbg.pdfIn PDF document text
    • http://vvd.bar/clip_tiktok_b_mz4q8t.pdfIn PDF document text
    • http://reduslim-officialsite.site/67116120857nx8pl.pdfIn PDF document text
    • https://cdn.sqhk.co/medujebukoma/cgeheif/world_market_coupon_code_august_2020.pdfIn PDF document text
    • http://service-hire.com/c_for_everyone_2nd_editionxh8ab.pdfIn PDF document text
    • https://cdn.sqhk.co/ditutafewaw/ShR8jif/62398707152.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/hhhjjcz/sokipanoxexevekefiwepo.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/boduxatavepe/adobe_after_effects_handwriting_animation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/resaxekabizizonifizubego.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/beginners_guide_to_wine_making.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/tropical_fish_guide_uk.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_off0000ec33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC33 5152 bytes
SHA-256: daf81ff55a1edb23558df910bbb6a1636c35e6968b863b5640e85c9fefdb4a82
font_01_sfnt_off0000fdc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC8 10224 bytes
SHA-256: 9e7e11047ec39ae9f8e74fab03b6ec08763be314beac21971522c48314994e39