Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c76a7208313644…

MALICIOUS

PDF

60.9 KB Created: 2020-12-07 08:19:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ff1aabaaadecba4b13766d8e91f9e94a SHA-1: d491f017c772456ce4ceb4a3a8c6053e4cfa626e SHA-256: 76c76a7208313644aa1a61a38b943035b05146904b6b398db1b5f5a34e351af7
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://trafftec.ru/123?utm_term=maricopa+county+property+records PDF link annotation
    • https://semovililuf.weebly.com/uploads/1/3/4/4/134476677/7178475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376879/normal_5faec1058b3c6.pdfIn PDF document text
    • https://gewilede.weebly.com/uploads/1/3/4/3/134311853/22b0862f939718.pdfIn PDF document text
    • https://roturusuwanowus.weebly.com/uploads/1/3/4/3/134363773/030e4308a0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453528/normal_5fa8580aa93a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zonebon/eve_online_starter_guide_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c303a13a450babf35031/t/5fc3ac6c2dd96f59185e2799/1606659180929/android_busybox_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff69a940-6ead-4741-b891-8a4077d2cc77/siriwivesenawino.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd3110e1f2823a12068600/1606234388992/witcher_3_combat_guide_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/chavanprash_song_pagal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2eaac5e8e827d429b0bf6/t/5fc5c385cb3e0f577117b256/1606796168525/husqvarna_rose_sewing_machine_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29d2a403f5353fda0c22b/t/5fc8465dd6e0cc37e3370b72/1606960734165/40637729221.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe4ce4fa04221c71ee14b5/1606307045138/customer_dispute_meets_fcra_requirements.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc101f96609fd0ee791e489/t/5fc2044408845d0924d1249b/1606550597822/romiette_and_julio_chapter_11_summary.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB140 5140 bytes
SHA-256: 7f45c2ffe38e201de61757ecdbef26ddfceeeea35d267dbbb46a8cedf128f42b
font_01_sfnt_off0000c2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E0 10008 bytes
SHA-256: da07bcb7a3e7464e3fe5bcc8744765044ec9db85580193d2c692cba7304090fb

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