Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd6f4d4d1e48c680…

MALICIOUS

PDF

65.2 KB Created: 2021-03-04 10:01:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3671d309957ab5d3d097ef3a9a1c3273 SHA-1: 4bdd628d539a04f3b0a7bb9f4fcbcd918e52cf8c SHA-256: fd6f4d4d1e48c68026e9b3cf79f2ecbcffa387e6c00471d39cff1ada3c34395f
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://botokaw.ru/award?keyword=ktm+125+sx+owner%2527s+manual PDF link annotation
    • http://lebizifijafaxim.medianewsonline.com/how_to_get_bookshelves_fast_in_minecraft.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/ecXgjjc/zombie_craft_survival_best_free_shooting_game.pdfIn PDF document text
    • https://cdn.sqhk.co/nipigagavadu/9rhhjjo/2048x1152_youtube_banner_maker.pdfIn PDF document text
    • https://xudidetopos.weebly.com/uploads/1/3/4/5/134579215/816d1688f.pdfIn PDF document text
    • http://bekokasutam.22web.org/firefox_developer_edition_full.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kupavojos.epizy.com/vonuzemotulatuwezise.pdfIn PDF document text
    • http://fujifumava.epizy.com/electron_configuration_worksheet_pogil.pdfIn PDF document text
    • http://loxeputogojew.rf.gd/the_monkees_daydream_believer_lyrics_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/mosaic_art_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/95853559031.pdfIn PDF document text
    • http://sudogirelokuf.epizy.com/97365266253.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/android_tv_netflix_subtitles_size.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/11468542968.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_off0000c5a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5A2 5300 bytes
SHA-256: dffe9576c4c34baf96b266435f809ba08993d8ffd8f7a3ef51da898d58357afa
font_01_sfnt_off0000d7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BC 9532 bytes
SHA-256: 6bee78676e4f9cd04a18b8799cd472b269a77f84fcb7e9a3f966c72ec95bc15e