Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85e197686bc5c56…

MALICIOUS

PDF

68.7 KB Created: 2020-12-03 16:56:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ed6ad2061326e26284b7f8e9883f598f SHA-1: 9b65a6495e790758a5fca1c2c2a1674a670b0d9a SHA-256: e85e197686bc5c56c6e22c9fc0d0011206fe8c3b6623d7c4c5d66cc6c03bba5c
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://trafficel.ru/aws?utm_term=bossuet+oraisons+fun%25C3%25A8bres+pdf PDF link annotation
    • https://lazesomixasima.weebly.com/uploads/1/3/4/5/134588612/pewagagivule.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379846/normal_5f95213e113b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413703/normal_5f9fd76b16799.pdfIn PDF document text
    • https://ganepivojo.weebly.com/uploads/1/3/4/7/134774155/duboxikubarufutida.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/68ea2429-0d04-4a5b-8907-bfb1890e8e00/fujuvubelalejum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed2bb996-a8c9-4c76-95f3-ae5d5f21da23/35621722104.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/hernia_diafragmatica_pediatria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45726fd7-240a-4b8a-bb46-ba1906488aae/maryland_sheep_and_wool_festival.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc066c960f2895dc1e54813/t/5fc73e15788a962b7c2b752b/1606893078353/crimson_heart_2_mod_apk_android_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8068d1a0-b21e-4b60-b286-549506bfaec2/wokuwidenapunalitafek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3c4da92-6a88-4c74-86d3-911ee226b855/plant_paradox_enhancement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc150c98-f902-4303-8597-84a4dd83545a/zanibegesalenumemew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55edc69d-ca9a-4020-9297-74ebd66d9774/trilogy_200_manual.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_off0000bdb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB5 2948 bytes
SHA-256: b4e89ce22b0625147f675ecbe73964faefa1f465906c0fb1976ca67ad93ccb2d
font_01_sfnt_off0000c839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC839 5336 bytes
SHA-256: 35a522e6cf36214b1ad7f51f8452761a5e0da8564bb39c51ce153aec900a0b82
font_02_sfnt_off0000da27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA27 16072 bytes
SHA-256: 8e9f332d17f17f31a5f8c254b07c08730e06a9454e0388ccedc8554781cd5ab8

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