Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4c80cbf3f79ace…

MALICIOUS

PDF

114.5 KB Created: 2021-03-23 17:27:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 09c3ca465cec230fae1f53f4482c412c SHA-1: 231299a36cc01b550ac1dbb664d426dca7c0baaa SHA-256: eb4c80cbf3f79acece1ae11b92c6a40f16bba1b170b16e10bc7c0b99fe238c29
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9994

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/award?keyword=l+anatomie+humaine+cours+pdf PDF link annotation
    • http://kakolamilasaru.medianewsonline.com/67104553375.pdfIn PDF document text
    • http://xutifufaxe.mypressonline.com/48977918787.pdfIn PDF document text
    • http://suvolupijiro.mygamesonline.org/cardiopatia_isquemica_fisiopatologia.pdfIn PDF document text
    • http://gagefiwirimat.medianewsonline.com/autolesiones_adolescentes.pdfIn PDF document text
    • http://kotowis.22web.org/android_snackbar_move_view_up.pdfIn PDF document text
    • http://pevetune.66ghz.com/financial_ledger_template_excel.pdfIn PDF document text
    • http://zoluwofemofuper.sportsontheweb.net/56262071595.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zisukuvi.atwebpages.com/63072104103.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/hero_bike_spare_parts_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6063f575-a16a-420b-a5bb-56c35835ff1d/do_i_need_microsoft_asp.net_mvc_4_runtime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11302452-7384-4e21-a643-c4e7a7b78e05/how_do_i_use_f4_in_excel.pdfIn PDF document text
    • http://kewivifonawati.epizy.com/89126851075.pdfIn PDF document text
    • http://gapuxekoxegibeb.epizy.com/barron_s_sat_subject_test_physics.pdfIn PDF document text
    • http://kikukuvikato.myartsonline.com/fibojijumikunuxox.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/46293235950.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/sample_beekeeping_business_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f69965b-8816-453c-bc78-b68f03a7a2f6/un_curso_de_milagros_leccion_130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcee49eb-35c1-4435-b626-e3969f5b2995/pokatefugubepixerumad.pdfIn PDF document text
    • http://vepisesilutez.epizy.com/31039226674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e8dfaa-346b-499f-83d5-bce11b635a28/wutetule.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/fosutizuzigikixa.pdfIn PDF document text
    • http://viniwowosur.onlinewebshop.net/rolidaxuzinari.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/51565751886.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/article_368.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F15 5304 bytes
SHA-256: 79954f7f54a7c5504cda8a5ae1d0e5d313b08046da38e8916ef7a4927ad69f0d
font_01_sfnt_off000190fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190FA 13404 bytes
SHA-256: 9c4828c601d209bd6e6c46a4eb99a0e33d274eccbdfb4d17595a27903faea7a4

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