Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0866d18f6b470a…

MALICIOUS

PDF

43.7 KB Created: 2020-10-27 09:04:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: f014d0486d19991c97361e00f0532206 SHA-1: e4a87aae352d2866c7bd7c4ebdff7b3e50a8ad2d SHA-256: 3a0866d18f6b470a35fe247f0a4706c968d53dfee8bb3adb1bdd5b4339cdb9f6
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://ttraff.cc/123?keyword=arms+or+fury+bfa+2020 In PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/539812.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/28397caff1f.pdfIn PDF document text
    • https://puliwavigajog.weebly.com/uploads/1/3/4/4/134469254/jedanojazom.pdfIn PDF document text
    • https://nurirekesuvakip.weebly.com/uploads/1/3/4/4/134404885/89cc5bea0f5e.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/ziwexaluzo.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xotasewegal-sutumate.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/131584da-3eff-4cdc-a316-7180ab5d04e4/bobcat_s250_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f513a84-4155-4faa-82b5-c8535c38c7fd/fojevagofujalower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79c40424-548d-4a63-9da0-335648ecfb38/jadarasufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2db8d64d-8b4a-4c2b-9863-b193608f8dda/vidokifijaloxug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5f02f0a-d2b2-46e7-82b5-3239eb3459ad/lorde_melodrama_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/599bb613-263b-48ed-b895-ab264ddf4a57/xabevenipabigameni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/la_bella_durmiente_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5404/6618/files/clash_of_clans_hack_apk_download_for_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2011/4331/files/lalaguzolon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6050/1921/files/dosafofirukulumof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7827/9858/files/curtis_1244_controller_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/mario_moreno_cantinflas_biografia.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/19823703529.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_off00006c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C58 5384 bytes
SHA-256: 8f86757550eb6f16db8e065c9a8db1a4401d20222ad8fdbec7905be9075a6bf0
font_01_sfnt_off00007e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E92 10428 bytes
SHA-256: 502e9adbdcac4325e8ae2af605f8702f361361c8a14ef866b830497767decf0f

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