Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ce214f8fc949ee…

MALICIOUS

PDF

88.3 KB Created: 2020-12-15 23:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 52d497f3e996cefbec13b31df5a2a5a6 SHA-1: 965b42a81b47b878df1dfa206e18b27e930ebc05 SHA-256: 89ce214f8fc949eee0b38a4d318ee776714deb0abf66f3397107a1e028ebc173
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 0.9996

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://traffking.ru/strik?utm_term=a+confederacy+of+dunces+pdf PDF link annotation
    • https://tojuseviru.weebly.com/uploads/1/3/4/5/134513446/f90e97e2604a.pdfIn PDF document text
    • https://xokekomoto.weebly.com/uploads/1/3/4/5/134598663/00df1fbd4.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/ba8ca74a-655b-4232-8739-fade8a4f92a9/eso_outfit_change_token.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc527259-4497-4e7d-ad07-1c3aec278d42/bivaredezoxevudaratubij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8e22362-5057-4cd5-852b-f64f264ce3a7/30970227537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f833e689-4ced-4bbc-b6fb-b5f587fabd9e/4445967292.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/libeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3bd2638-4684-4b18-879e-74d0b05b8461/cincinnati_bearcats_basketball_schedule_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44fcc544-94bb-476a-bf8a-3edbc5958e11/bevuxikaropuxov.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b80e5bcb0228a28e2589/t/5fcaff6fb6b7366152f0aa21/1607139184527/73868020445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9586f25b-2e6d-43ab-b173-fea1dc5687b3/4.1_sampfuncs_5.3.3.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfdcbe18c5c478ec1e642/1606286798883/east_new_york_family_academy_brooklyn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/766a3dd7-3502-4895-9fec-7767c33c5ee1/tegodukatazal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a5cd8f0-35b3-4914-9ab4-ad2992969082/at_205_reseal_near_me.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB30 6444 bytes
SHA-256: e8ac5c97b4222b14b05c49468aae435eab6d01b1b1e1bcea31f810b253a4c327
font_01_sfnt_off00010b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B21 5208 bytes
SHA-256: 872eedf3abd97119e6607e6ce091f7260a792e908561a2f37cef229531b9a25a
font_02_sfnt_off00011cf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF5 12108 bytes
SHA-256: 84074f59415a77eccabf6ee981df3ed9560349071c8d48e836d0423e6d472b9c
font_03_sfnt_off00014457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14457 6084 bytes
SHA-256: 0c3766dce408445f50e904d652c9326647873efe4fb22fffa238fb744f3c79a9

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