Malicious PDF — malware analysis report

Static analysis result for SHA-256 53cceee14c687438…

MALICIOUS

PDF

82.1 KB Created: 2021-05-16 05:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6819d7feba1510d5e9581e1e372c2d64 SHA-1: 1fa3eeb4ad4e56730578793bb85a1f66053438c0 SHA-256: 53cceee14c687438b97cade9a2cea0a4408b9d950f893278a32428820f279ddd
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-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://xezojetit.ru/strik?utm_term=washington+state+basketball+coach+kyle+smith PDF link annotation
    • http://znalomstvavip.site/char_broil_big_easy_turkey_fryer_recipes2oz3l.pdfIn PDF document text
    • https://pifejidulilev.weebly.com/uploads/1/3/4/4/134480865/tijomenirilime-fisozumabekil-xurozowiv.pdfIn PDF document text
    • https://pufotesur.weebly.com/uploads/1/3/1/3/131378771/wetuvalibolo.pdfIn PDF document text
    • http://fekosuse.getenjoyment.net/food_calories_list_malaysia.pdfIn PDF document text
    • https://sodikisug.weebly.com/uploads/1/3/1/4/131437766/fevifadexibenexixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450147/normal_605a09b747df7.pdfIn PDF document text
    • http://zitalogeloluwiw.mygamesonline.org/energia_elica_como_funciona.pdfIn PDF document text
    • https://dexuruxewiripo.weebly.com/uploads/1/3/2/6/132682754/004758df.pdfIn PDF document text
    • https://magivuvesef.weebly.com/uploads/1/3/0/7/130775451/kifolalatu-dulobotak.pdfIn PDF document text
    • https://cdn.sqhk.co/powosinubuk/gfjiZje/buxaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420756/normal_6044f8b6aa823.pdfIn PDF document text
    • http://mpvideo.org/xexuminidomegitigi1r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445341/normal_6058f0b85b28f.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/f0Jhjha/police_car_lights_and_sirens_for_sale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381730/normal_606ea1171db0c.pdfIn PDF document text
    • http://stassikorskyi.com/113269898995opt8.pdfIn PDF document text
    • http://kamefutebiwef.mywebcommunity.org/88603081334.pdfIn PDF document text
    • http://naturka.space/alexandre_dumas_francaismripp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kosezofejesuxef.atwebpages.com/tubemipubuj.pdfIn PDF document text
    • http://rexefobixavater.myartsonline.com/dozopaxuwewumi.pdfIn PDF document text
    • http://vizeroxati.rf.gd/76004341255.pdfIn PDF document text
    • http://fudejavifexas.epizy.com/what_was_the_rationale_of_brown_v_board_of_education_in_1954.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF612 5224 bytes
SHA-256: 6b1453e4d9f382ddf839859c315063a18d1394b8f980d71c0f0489910134d2cd
font_01_sfnt_off000107bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107BC 10716 bytes
SHA-256: 314c46e491b3d0506c57f35731b83178192f60c56ef7d880d6388f4e7874c4cc
font_02_sfnt_off00012c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C75 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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