Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d57824ddfde1ca9…

MALICIOUS

PDF

70.9 KB Created: 2021-03-13 20:25:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 96b6b7b4550ee3933448cc2e8504d08a SHA-1: 10fc82c78ea93ec603d880dc8b68542d615035c9 SHA-256: 9d57824ddfde1ca98c37695cf5bda9d069544148ce8e57cfc6151921e595fe43
156 Risk Score

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-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://golowaki.ru/123?utm_term=manual+candle+making+machine+in+kenya PDF link annotation
    • http://gajaxujifusokul.mygamesonline.org/zuvoxovupelimotivogurewuf.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/css_tutorial_free_download_for_beginners.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/masimo_rad-8_pulse_oximeter_user_manual.pdfIn PDF document text
    • http://bovibuvebus.getenjoyment.net/cal_cal_game.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/bobosifulugumodavivo.pdfIn PDF document text
    • https://komiwafaka.weebly.com/uploads/1/3/2/7/132712661/jutorivomofeken.pdfIn PDF document text
    • https://gidutuzewefira.weebly.com/uploads/1/3/1/3/131380066/8139787.pdfIn PDF document text
    • http://mawosatejojeka.sportsontheweb.net/pexivetex.pdfIn PDF document text
    • https://lanasasaf.weebly.com/uploads/1/3/0/8/130815311/177d48998505.pdfIn PDF document text
    • https://tanibabinilez.weebly.com/uploads/1/3/4/0/134018029/supixitupik_lemaguti_jupuzesep.pdfIn PDF document text
    • http://nesebonuvobeju.getenjoyment.net/as_artimanhas_da_excluso_sawaia.pdfIn PDF document text
    • https://ginalanofogise.weebly.com/uploads/1/3/4/8/134886059/zazoxegaxu_jodirururulubi_pepumenixuxibu_fajowix.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/renoxelewotewobiwetovod.pdfIn PDF document text
    • https://xajobukemuxup.weebly.com/uploads/1/3/5/3/135398270/losuxorex.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/jemutuge.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/xupovobejanam/sinoxevavis.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/68252189018.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/guillotine_sheet_metal_cutter.pdfIn PDF document text
    • http://lawesiwewif.onlinewebshop.net/angle_of_repose_table.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/40637992314.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/49371506597.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_off0000d532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD532 5248 bytes
SHA-256: 6c9ad0af612544aba7501069924e9d8e98a7da9eae857f3eedd2050224046aa3
font_01_sfnt_off0000e6fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FA 11752 bytes
SHA-256: c3e67da94c7865b83c0968c1e1d57dc22c237222cc5a0153e853971826b445e8

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