Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae142d390259a03…

MALICIOUS

PDF

80.0 KB Created: 2021-03-16 01:18:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a560d7e358a4acb9666102ba1b44e3a7 SHA-1: 5c50480c25f4edffb9239652fe89dd86a66e8cd0 SHA-256: 2ae142d390259a034a50ea5130351ffa33b33a284707c9679b62e4a5a0c386eb
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 0.9995

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 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://nipisod.ru/strik?utm_term=difference+between+itil+v2+and+v3+foundation PDF link annotation
    • http://silvanozito.online/divitogwaumo.pdfIn PDF document text
    • http://rawenspant.online/mijesorajitipunonog6732.pdfIn PDF document text
    • http://zuvels.xyz/fronted_adverbials_worksheet_ks3ml8az.pdfIn PDF document text
    • https://sekilulijafos.weebly.com/uploads/1/3/1/4/131438177/814989.pdfIn PDF document text
    • http://activa-fb.com/17070018810ze8tf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376375/normal_5fef46b9635c0.pdfIn PDF document text
    • http://firolinulaka.22web.org/ball_badminton_new_rules_and_regulations.pdfIn PDF document text
    • http://megantv.site/hp_deskjet_6940_printer_manualm36rv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380887/normal_602d71c0ccce5.pdfIn PDF document text
    • http://jakartapro.xyz/3_metros_sobre_el_cielo_2_pelicula_completa_descargar_gratisig7vl.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/what_is_the_fastest_verizon_fios_routerdmkru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450512/normal_6000f83aadd0c.pdfIn PDF document text
    • http://sajiwurejedetu.sportsontheweb.net/business_process_reengineering_text_book.pdfIn PDF document text
    • http://lovemecompletely.com/adobe_illustrator_classroom_in_a_book_2019_lesson_filesr2f0h.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/37592113165pvmxy.pdfIn PDF document text
    • http://jatuligirez.22web.org/22925374056.pdfIn PDF document text
    • https://winateminapalem.weebly.com/uploads/1/3/4/0/134041456/634bb33972b3.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/9411235.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kopolug.myartsonline.com/fabuduwabuzokefokokanarag.pdfIn PDF document text
    • http://mugekalamiwatek.epizy.com/dulufilagi.pdfIn PDF document text
    • http://mawokale.myartsonline.com/why_is_my_dryer_making_a_loud_screeching_noise.pdfIn PDF document text
    • http://buwomonemagup.epizy.com/top_10_best_antivirus_software_free.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70B 5424 bytes
SHA-256: 0170e454f68aea3b9f13598795ae5d7961ebff6379d0c460d156f978c0a5b5b4
font_01_sfnt_off0000f9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AE 10276 bytes
SHA-256: 79460bcab17e9e804d6a88d0ddc5d106706eea9c2cd474fe64ac810e378f96d7
font_02_sfnt_off00011cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF9 16116 bytes
SHA-256: 71b2491630faf6f8a9e3c3f2a8297076d6941240cc6dc07f338f439fc66915bd

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