Malicious PDF — malware analysis report

Static analysis result for SHA-256 e300fec2ee8d828a…

MALICIOUS

PDF

72.4 KB Created: 2021-02-09 11:56:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3fe9ac80e7c59702ce3377cf0447456e SHA-1: 4db86fba568be744b3340ee2c70642fd5dcea763 SHA-256: e300fec2ee8d828a0365162c92213aaf423e99070065a0c178c15ddeb80f4415
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/123?utm_term=best+c+ide+for+linux PDF link annotation
    • https://lebipogife.weebly.com/uploads/1/3/5/9/135990957/sogager.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/destiny_2_guided_raid_forsakenejcpw.pdfIn PDF document text
    • http://i-men.ru/movakawowamizuravuzedg26q.pdfIn PDF document text
    • https://cdn.sqhk.co/gotofebelu/ahaNGic/mini_bowling_ball_kerosene_lighter.pdfIn PDF document text
    • http://islta.fun/gamefaqs_persona_5_confidant_guideqeidm.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/nijudow/highly_absorbable_form_of_magnesium.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/hp_notebook_bluetooth_driver_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/deep_sided_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/xejiwazelotosigafamuw.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/hiragana_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/flat_booking_agreement_format.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/yahoo_mail_apk_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/free_easy_drumline_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/the_lord_s_prayer_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/snaptube_app_apkpure.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_off0000e0ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FF 4920 bytes
SHA-256: 532e08f3d14be750e54ef5000ad7fcf111b1634be8245dc3bcc1819d968877ee
font_01_sfnt_off0000f1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D6 10348 bytes
SHA-256: 3d83571c53c2e114a0f590bc20aa2953815e185bf43d3bb5e63270bb39d6ba8f

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