Malicious PDF — malware analysis report

Static analysis result for SHA-256 9863205ef0725009…

MALICIOUS

PDF

71.7 KB Created: 2021-03-19 11:07:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f26a59497d04c36343f685ae682439bd SHA-1: b78058694e63f3e8af7fae0f646d7c276890f269 SHA-256: 9863205ef0725009bd62201e5706653513373c181494f69809162637734af8ad
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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
  • 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.
  • 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://leonvi.ru/award?keyword=ccg+cable+gland+catalogue+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391605/normal_6051fffeaa429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448115/normal_604b1c6420e24.pdfIn PDF document text
    • http://taxokijoba.sportsontheweb.net/vasaw.pdfIn PDF document text
    • http://fexevewuli.mypressonline.com/compound_interest_questions_in_hindi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470412/normal_5fe7736cbde91.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/af3a2a6d-6ccd-4409-be55-d455a818fb8d/where_is_free_willy_2_filmed.pdfIn PDF document text
    • http://bukazud.rf.gd/17654873445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/940ecf4d-bbdd-468f-89a3-3743061030a5/32289362562.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9177b10b-c1fb-4152-b983-d5a571963a1f/48524204373.pdfIn PDF document text
    • http://zufonokimilije.epizy.com/open_chegg_answers_free.pdfIn PDF document text
    • http://paluluw.epizy.com/zenogomewesike.pdfIn PDF document text
    • http://vumebef.epizy.com/chemistry_notes_for_class_11_chapter_2_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64336964-a203-40cc-8b7b-29695f21b432/xafifiwebajizubafupopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/956cde87-8cf5-462e-b901-484d3850a293/how_many_times_are_giants_mentioned_in_the_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d56fbb74-b370-4956-9bed-0765dda7da38/40132087895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57c5e1ea-15b8-4288-aeb8-d676f552acc0/xojolotaloxovitez.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cefb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEFB 5048 bytes
SHA-256: 6abc95a6d46c9acb008d544eb1142949441958aeb96e0f7729f050ccd1f1bc64
font_01_sfnt_off0000e038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE038 10500 bytes
SHA-256: f52df748395da18fcc94a16830d64e4d9151d19a058ba1a9015153a9af103954
font_02_sfnt_off000103e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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