Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d84899f689f8c8…

MALICIOUS

PDF

69.4 KB Created: 2021-02-13 04:41:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d633fd68955f03d96e8a1d0b91c2dc62 SHA-1: 64e743f3536776524d141f37b5d69f4426935b93 SHA-256: e3d84899f689f8c8f079a8ea83f960dca2b0701b2156d572466de1d8b717a69d
196 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=newton%2527s+third+law+lesson+4+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/rukokota/1hj7jgn/japanese_alphabet_song_mp3_download.pdfIn PDF document text
    • https://romasipunup.weebly.com/uploads/1/3/2/6/132681769/1602156.pdfIn PDF document text
    • https://cdn.sqhk.co/mapelimujeku/gebrwhb/76134739794.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/wVRibhg/pocket_warrior_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/bmjjADC/monster_energy_supercross_game_switch.pdfIn PDF document text
    • http://instapriz.online/lekojumadajaluvowowajijtv9hl.pdfIn PDF document text
    • https://ronabamipiboti.weebly.com/uploads/1/3/4/5/134598089/gumufafa.pdfIn PDF document text
    • https://cdn.sqhk.co/silutoge/khhpgXC/6751281622.pdfIn PDF document text
    • https://wewofubajibopa.weebly.com/uploads/1/3/1/3/131381003/jaxupul.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxafopagad/LwbjhS9/3d_cube_drawing_with_shadow.pdfIn PDF document text
    • https://lurexiji.weebly.com/uploads/1/3/4/5/134594132/vopejopelorowad.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/dutimajizowa/ladeba.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/rezafufojere.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/padebudaboduxovu.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/nevewituwi.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/crystal_reports_designer_for_visual_studio_2013.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_off0000d457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD457 5160 bytes
SHA-256: e86d32856e2ffe301fbad747ee1a4fe5d8a38b084c1b51aa50c87df18e8dcd8e
font_01_sfnt_off0000e5fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5FC 9936 bytes
SHA-256: 4c07045f296b9517445615fe09e55733a3294271b70a0da46be2a53ea5cb8101

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