Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3952109e9337c9…

MALICIOUS

PDF

65.0 KB Created: 2021-03-18 04:10:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6a8e9586093cc1d7aa72bf7384730cd8 SHA-1: b37856ea3c0e9576b333d777b878bb398fe27053 SHA-256: 9e3952109e9337c94319bf17455976ae345ab8a81be8be78bbe07f0295c17071
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-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://botokaw.ru/wix?keyword=practice+principles+of+natural+selection+worksheet PDF link annotation
    • http://sowopezamiw.medianewsonline.com/how_much_does_super_kirby_clash_cost.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411219/normal_6046940db794e.pdfIn PDF document text
    • http://nifamepejon.22web.org/human_centered_computing.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463279/normal_5fc8db394b129.pdfIn PDF document text
    • http://lavogomibonit.iblogger.org/puffin_browser_pc.pdfIn PDF document text
    • http://daxavepevepa.mypressonline.com/33586921530.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://caa91486-5fcc-43b7-8b2b-5b817ae85bbe.filesusr.com/ugd/26bbcf_4cc370e8e911439a9ca56f4acf2c02fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/58964330731.pdfIn PDF document text
    • http://xuwuxubemepimox.rf.gd/uc_browser_laptop_ke_liye.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/agenda_mensual_2018_para_imprimir.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/beyblade_burst_turbo_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/nuwelafududomexipiwuz.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/how_to_thread_a_singer_futura_quartet_sewing_machine.pdfIn PDF document text
    • https://f9c81679-ddb1-4746-ab40-32673edc426c.filesusr.com/ugd/2eff39_cb803e80e6bf4ceab4bed033fe69b26b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/training_certificate_template_word_document.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/gambar_wallpaper_keren_bergerak.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_off0000c562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC562 5260 bytes
SHA-256: f496bdb833e6f18dbe935af38ecc050df8f5eefcf30a4d1d5b63e4d6f11587d4
font_01_sfnt_off0000d750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD750 9216 bytes
SHA-256: 5d9c1a994e96b12868551d1514c12e1c93e4699ee3f3746bfbb608173e3a1c7d

Open this report in the interactive analyzer, or submit your own file for analysis.