Malicious PDF — malware analysis report

Static analysis result for SHA-256 45aebf60625989a1…

MALICIOUS

PDF

81.7 KB Created: 2020-12-17 22:54:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ae02f9948292ab0528361d5c8658abea SHA-1: 156baa70007c4f95e7bd0fb27198f2f1da32fd09 SHA-256: 45aebf60625989a1de9172f71d4cb2dd524bf301a0c3c06818c840d8d65845d4
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://traffnew.ru/strik?utm_term=budweiser+collectibles+price+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419002/normal_5faf14ffe1677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489601/normal_5fab380dedde5.pdfIn PDF document text
    • https://gojafone.weebly.com/uploads/1/3/4/8/134891791/zaxemipovojop-xuguwokiv-fepax-xoxugedavan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f872d2a11ced.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/kobivimelelo/police_report_vs_crash_report.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/ansible_2._8_rpm.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/panduan_belajar_bahasa_arab.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/5242705994.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/whatsapp_status_english_video_love.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/movimiento_circular_uniforme_y_uniforme_acelerado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45fe7dab-0713-4084-9d54-49191c0cfbe5/dragon_ball_fighting_games_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/glabrezu_d_d.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/finance_clerk_interview_questions_and_answers.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_off0000f1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FA 3264 bytes
SHA-256: 21c18467c87123b3357d60eaf95bafd596ecf228e5f940db23229aa6d9f263cc
font_01_sfnt_off0000fda8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA8 5312 bytes
SHA-256: 4a951092e3c38c5a48187755ee499c0735ae3e2a4663b891c21cb60dec3c92bf
font_02_sfnt_off00010fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FDA 11984 bytes
SHA-256: d5e818ccac8fd4c35efac9d1e95e0d1b66f464ba13911416dacd3bd5a4a85147

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