Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc90f59f1a171c7e…

MALICIOUS

PDF

74.0 KB Created: 2021-02-25 05:06:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2ae2f897978f069c426da3d94b67179f SHA-1: 5aa01cad7050dbe9e5ab7ab03ec460d22d358511 SHA-256: fc90f59f1a171c7e05fb12dd098b1da36368d1322b29abd9b5679c12d7c41e86
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://bologen.ru/award?keyword=images+of+organisation+gareth+morgan+free+ebook PDF link annotation
    • https://zadujogor.weebly.com/uploads/1/3/1/4/131406982/gisujelijidinul.pdfIn PDF document text
    • https://musekakilex.weebly.com/uploads/1/3/1/4/131406804/060df6.pdfIn PDF document text
    • https://sibanomo.weebly.com/uploads/1/3/0/9/130969588/ff7e1865477.pdfIn PDF document text
    • https://penebiji.weebly.com/uploads/1/3/5/3/135346042/5605914.pdfIn PDF document text
    • https://cdn.sqhk.co/xelalizogim/IIghjf9/archery_master_3d_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sugutomipu/Kjdcsje/download_ace_fishing_wild_catch_mod_apk_terbaru.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/nevovumowa/pomuvobezago.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/who_invented_game_of_life.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/paradiso_perduto_milton.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/nordictrack_commercial_1750_treadmill_best_price.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/colon_polyp_surveillance_guidelines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/31035786714.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/85536705159.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/android_tv_stick_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/tres_metros_sobre_el_cielo_pelicula_completa_parte_2_repelis.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_off0000e663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE663 5288 bytes
SHA-256: 3c66ad42d7af08474a4967e7801926bd0663d0c6c6b701af2944d20fc3203aae
font_01_sfnt_off0000f83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83B 10112 bytes
SHA-256: d119aaadad3ff45dbaee148861163e604c6ac116565608a8534e4ab50e2ba40d

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