Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ec9428142a07b6a…

MALICIOUS

PDF

70.3 KB Created: 2021-01-27 16:03:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e48104426300cc581cb156153fdf7b0e SHA-1: 04b98641727922a9aa81c1c3f2eca87188923d42 SHA-256: 2ec9428142a07b6ab5b71e2381aee79d1ae1e861ffa909ade75d0c618c132875
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/123?utm_term=ind+vs+zim+live+streaming+free PDF link annotation
    • https://cdn.sqhk.co/sexifirume/gE7acgf/survive_on_mars_mod_apk.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/bolabovadej.pdfIn PDF document text
    • http://bupetud.xyz/buy_apple_cash_gift_card_onlineryebq.pdfIn PDF document text
    • https://sazefowefojewen.weebly.com/uploads/1/3/4/8/134893887/sexupumabedov-renuxi.pdfIn PDF document text
    • https://komamezumef.weebly.com/uploads/1/3/1/3/131398541/c885efd.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzetuzame/ihif3SD/22546029677.pdfIn PDF document text
    • https://cdn.sqhk.co/menasimax/c0jatjj/ball_sort_puzzle_level_504.pdfIn PDF document text
    • http://marketeuro.pro/video_x_player_download_for_windows_102z6au.pdfIn PDF document text
    • https://koruguliduni.weebly.com/uploads/1/3/4/8/134896859/javoweniramajowifog.pdfIn PDF document text
    • https://retizobokeli.weebly.com/uploads/1/3/1/0/131070240/4707275.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/sesafefanulokam/druid_level_up_guide_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/authorised_signatory_list_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/nadosokumeluxorume.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/14386662237.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/formulierungen_englisch_diskussion.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_off0000d55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55D 5276 bytes
SHA-256: 9f094b5fbbb09e2cff7581608ed600896dfeb4a0f43a34839dbcfcb79d6f83e9
font_01_sfnt_off0000e746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE746 10944 bytes
SHA-256: 6324bebe80f214ca53a340733b95f452bfc3346c7b05f623ea4ada8f3f5648a5