Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5bd8e8bd0600aaf…

MALICIOUS

PDF

84.2 KB Created: 2021-04-17 20:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e92dd5cc4747f5ad4ea8dc7ac22131f4 SHA-1: 58daaaf0412a95f3be2147082c807cbb05257cd2 SHA-256: e5bd8e8bd0600aafafba35bb519dd5ac31533787b869e99e106f328cbb787de0
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://fokemale.ru/strik?utm_term=canon+pixma+pro+100+how+long+does+ink+last PDF link annotation
    • http://xivobivivupe.mygamesonline.org/fodadiburudorowuwuf.pdfIn PDF document text
    • https://milorupubi.weebly.com/uploads/1/3/4/3/134317418/875804.pdfIn PDF document text
    • https://joripipebepif.weebly.com/uploads/1/3/4/1/134131856/af86d870232a.pdfIn PDF document text
    • https://bekefopu.weebly.com/uploads/1/3/4/6/134692172/faxugarazimo.pdfIn PDF document text
    • https://kavivafome.weebly.com/uploads/1/3/2/7/132740637/de053c1804cb2b.pdfIn PDF document text
    • http://fegivate.medianewsonline.com/what_is_the_formula_for_half_life_in_physics.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/gaxuremewuger/achtsamkeitsbungen_fr_kinder.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/what_is_a_metaphor_for_dummies.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/figev.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/10649868719.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/lilowasavijijesed.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/bavirefow.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/lightning_arrester_seminar_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/detonupuxuva.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/bejewuwodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b96dcad0-0d65-4bf5-a5e3-33fe46b6c94e/chamberlain_wd962kev_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/free_personal_expenses_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/shark_navigator_lift_away_deluxe_nv360_reviews_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/2005_ford_f250_6.0_diesel_oil_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52e688c8-4999-470a-b347-00fc7f0870a7/sasufa.pdfIn PDF document text
    • http://wipibefab.onlinewebshop.net/dark_souls_series_bosses_ranked_by_difficulty.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_off00010819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10819 5696 bytes
SHA-256: 30d712f40fc474004834b0214380fee77e7c7b12b5abdd3d6f0b6cffdf18cfdc
font_01_sfnt_off00011b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6D 11704 bytes
SHA-256: ad5eb73a9ad71c0139319dbcf7074220f1e1a7439aad7e8b27951b223578a0c7

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