Malicious PDF — malware analysis report

Static analysis result for SHA-256 69c4c4b39ad68e42…

MALICIOUS

PDF

67.2 KB Created: 2020-11-18 12:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e0e5d81be4a66dcf48a37f8adba3af5e SHA-1: 930277989d1e82548cbb7a26b4581af49c6d245d SHA-256: 69c4c4b39ad68e42a51bd88b2f0a9b02e7af4525ad623ec7c085bd14244825f0
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/123?utm_term=persepolis+rising.+la+rinascita+epub PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476446/normal_5fad2699e2be5.pdfIn PDF document text
    • https://jetizapu.weebly.com/uploads/1/3/4/3/134371104/9218623.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/6876635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390643/normal_5f9978326febe.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://s3.amazonaws.com/miwolezedubujoz/circuit_breaker_panel_label_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/43592674736.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/ragdoll_achievement_unblocked_hacked.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/32698027055.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/acidocetose_diabetique.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/candlestick_chart_analysis_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c0c7814-c923-48bf-b532-07459c2488e8/22170392612.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/12976821518.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/6626515542.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/grim_dawn_forgotten_gods_acts.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_off0000bdb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB0 5156 bytes
SHA-256: 69a86e2034c5ccba57f2c09f236e2dce3a722ee635ccc8a940650f45698b80a4
font_01_sfnt_off0000cf42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF42 10224 bytes
SHA-256: 902a31f1aea2f902d1670b4262d993e14e37aeaa1862bcd19e2964de8b9483fe
font_02_sfnt_off0000f1b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B7 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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