Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbee11db6c509d53…

MALICIOUS

PDF

104.6 KB Created: 2021-02-22 16:40:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fd701d4c571c34b274d9e72ef99e6465 SHA-1: 1c44b26f679ee10c52874ef1b73ecc0eb28d6fd8 SHA-256: bbee11db6c509d53bb9dcf9a43d9b52a67a1b4739dc23bfb499c3f538e57e91a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to Weebly and other free hosting services, indicative of a link farm or phishing operation. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites, likely for phishing or malware delivery.

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://jottigo.ru/123?utm_term=ap+physics+c+electricity+and+magnetism+notes PDF link annotation
    • https://likimipezerejo.weebly.com/uploads/1/3/2/6/132682052/funizomival.pdfIn PDF document text
    • https://tuwazumabokanif.weebly.com/uploads/1/3/4/6/134611666/wesewurakarovenek.pdfIn PDF document text
    • https://tigerabedudutid.weebly.com/uploads/1/3/5/3/135304069/savik_zilitexoxoduxam_lonizi_kikivowe.pdfIn PDF document text
    • https://lisevududotuwak.weebly.com/uploads/1/3/4/2/134265384/43e58.pdfIn PDF document text
    • https://bukodebavuv.weebly.com/uploads/1/3/4/6/134657655/mumela.pdfIn PDF document text
    • http://tehnotop.space/cvor_test_questions_and_answers_ontarioa5mbg.pdfIn PDF document text
    • https://gikatufezido.weebly.com/uploads/1/3/4/3/134338368/a7e6cc49.pdfIn PDF document text
    • https://wesuzimowigimeb.weebly.com/uploads/1/3/4/7/134745326/wejuranowuwoz_lekexosas_minasolanikef_beduta.pdfIn PDF document text
    • https://neredijavapud.weebly.com/uploads/1/3/1/4/131409024/1819027.pdfIn PDF document text
    • http://dojepajeruzugux.22web.org/carcinoma_medular_de_tiroides.pdfIn PDF document text
    • https://mejodedasebedo.weebly.com/uploads/1/3/4/7/134725949/2201779.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/mukut/agriculture_information_contact_centre.pdfIn PDF document text
    • http://rogasubuli.rf.gd/rokukelenazufizewipote.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/pomivigibelumetudew.pdfIn PDF document text
    • http://verekoxamokit.epizy.com/51651151038.pdfIn PDF document text
    • http://dekamikopegem.rf.gd/lagu_zumba_bum_bum_tam_tam.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/netbeans_complete_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/consolidated_marksheet_aktu.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/coroners_victoria_reportable_death.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/ridibasitiwojib.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/gustav_holst_the_planets_sheet_music.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_off00015cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CDB 5576 bytes
SHA-256: 5785fd6c158d2fa50f0af6fe374abb52aaeca6662a07ba8baf27733847e31d29
font_01_sfnt_off00016fb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16FB8 10848 bytes
SHA-256: e5098ae897bfdd5f7b101688e2eda854ebf34f6cff18805461b77cbf873a4acd

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