Malicious PDF — malware analysis report

Static analysis result for SHA-256 3843e6210d5afb82…

MALICIOUS

PDF

64.2 KB Created: 2021-02-12 06:38:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7c1fe82d52070e961dedecd0180146ce SHA-1: db74df03f534e518dfaf08c103246d54985a1ff5 SHA-256: 3843e6210d5afb82ea50bc127f6872c4811ea48993a287a92667168d378e647d
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://jacksth.ru/wix?keyword=gloom+despair+and+agony+on+me+chords PDF link annotation
    • https://cdn.sqhk.co/negapevu/gfKgjzU/control_box_led_under_car_kits.pdfIn PDF document text
    • https://cdn.sqhk.co/kosozezoxuxe/hiXjctU/offline_wallpaper_download.pdfIn PDF document text
    • http://kompledom.com/asvab_for_dummies_20186soik.pdfIn PDF document text
    • https://cdn.sqhk.co/bulamije/WXkjb6M/97765640328.pdfIn PDF document text
    • http://justiciaforjustice.com/25785662927z7a34.pdfIn PDF document text
    • http://detonic-ufficiale.website/imsai_arasan_23_pulikesi_video_songihopj.pdfIn PDF document text
    • https://metogixum.weebly.com/uploads/1/3/0/7/130775033/sejibumibinepejo.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/OrQYbjf/free_cloud_storage_backup.pdfIn PDF document text
    • https://cdn.sqhk.co/sejejajoxej/8xgf9bC/lowikobadapisaniximibudod.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/kujesulad/79688215981.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/tipos_de_abrazaderas.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/fortnite_season_10_prestige_challenges_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/21586914833.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/91456296775.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/louisiana_earned_income_credit_worksheet_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/60053866768.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/adobe_photoshop_for_pc_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/lunitevorupobawanoju.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_off0000bfbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFBF 5620 bytes
SHA-256: e6d1720698c1ac1a07c6aa02aa05d8a28f3c734ef9ec6e0c0be322c7e43168d0
font_01_sfnt_off0000d2b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B7 9632 bytes
SHA-256: 35dd6436aa92be921d95305880c670e5b052228ddc8ac355f8539e8624bc3689

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