Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae88e112af1c9ee1…

MALICIOUS

PDF

78.0 KB Created: 2021-02-11 14:02:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d29242add3993f6bf5e844bdbb0fae80 SHA-1: 26d6dd05c4118e3392a13365339a02b7631cccd3 SHA-256: ae88e112af1c9ee1cc0771c6356057ead66000d9a472f3e813bc5efd29f386a7
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/123?utm_term=deionized+water+system+for+rv In PDF document text
    • https://cdn-cms.f-static.net/uploads/4445736/normal_5fd3b7a58810e.pdfIn PDF document text
    • http://nuverlites.online/13027250633ymxbj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409396/normal_5fd6531520595.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454052/normal_5fd8ffa2d4972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5fe9a65775db1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484821/normal_6008b62452f8f.pdfIn PDF document text
    • http://egosikenclub.com/33797729648to9t9.pdfIn PDF document text
    • http://cloudmarket.website/sync_android_phone_photos_with_google_drive89g1a.pdfIn PDF document text
    • http://picsonair.com/best_2d_online_games_for_androiduf2k3.pdfIn PDF document text
    • http://mynasert.online/doterra_deep_blue_blendia9dg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407314/normal_6024c03715bae.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/rexogeguxosix/android_games_modded_apk_free.pdfIn PDF document text
    • http://gofugukalizugo.epizy.com/bhagwan_movie_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/information_biosphere_reserve.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/boosted_performance_red_demon.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_off0000f582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF582 5324 bytes
SHA-256: 109d30693be4295d8727c7c3b38430f703487f9e69c9866101c5b1c8513ffec2
font_01_sfnt_off000107b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B5 10436 bytes
SHA-256: 1420d2f19cb2b0a400dcf023bade26449927266f9ca9aa7a26f664b1da91135f