Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2cc1d32f3acfcb…

MALICIOUS

PDF

76.3 KB Created: 2021-03-09 21:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 601685e53b35790f9d7bbd635efd9c78 SHA-1: 21b507233c4f710c7f14d10f409c56a91f1a4815 SHA-256: 2f2cc1d32f3acfcb2405b5f087d2c6b3bce12ec01a3d724d12b2395083298c08
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or link-farming operations. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics confirm its malicious nature. The document body, though heavily obfuscated, suggests a lure related to 'Geogebra record to spreadsheet'. No scripts were extracted, but the presence of external links points towards a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/123?utm_term=geogebra+record+to+spreadsheet
    • https://cdn-cms.f-static.net/uploads/4379841/normal_60297d81ad255.pdf
    • https://cdn-cms.f-static.net/uploads/4414486/normal_6039f3c2aea3a.pdf
    • http://xasedogamif.mypressonline.com/xuredasunisan.pdf
    • http://tofoxewesaxizuz.mywebcommunity.org/zufubu.pdf
    • http://xuxijosut.sportsontheweb.net/6-3_practice_tests_for_parallelograms_answers.pdf
    • https://cdn-cms.f-static.net/uploads/4371812/normal_6025c49768d3f.pdf
    • http://nisakuwisiz.22web.org/15904901112.pdf
    • https://static.s123-cdn-static.com/uploads/4449417/normal_60089a2178d9b.pdf
    • https://poximixej.weebly.com/uploads/1/3/0/7/130776069/f3454d3.pdf
    • https://fiwozipuwawew.weebly.com/uploads/1/3/0/8/130814157/wasedexi.pdf
    • https://cdn-cms.f-static.net/uploads/4386839/normal_5fdc4c80e68d2.pdf
    • http://vobuxunulorepi.22web.org/biochemistry_basics_pogil_worksheet_answers.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jenisozazewubo/essay_writing_template_word.pdf
    • http://tugosujamas.rf.gd/calendar_2018_malaysia_template.pdf
    • https://s3.amazonaws.com/sefepugolupalax/41490730596.pdf
    • https://s3.amazonaws.com/tipikaxe/sutilofadibowevegorujel.pdf
    • http://sazasewugekupej.onlinewebshop.net/93967037824.pdf
    • http://zijiwaras.onlinewebshop.net/buvomi.pdf
    • https://s3.amazonaws.com/xanunafojuloki/sky_cable_uk_tv_guide.pdf
    • http://kejidexod.epizy.com/pak_studies_notes_in_urdu_2nd_year.pdf
    • https://s3.amazonaws.com/palikuvexake/room_reservation_format.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb7e.bin
a5a90c73e7bb681a266b66a93e5b3ebf18f325fc7004897079f80096aa0fb187		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7E 5472 bytes
font_01_sfnt_off0000fe0c.bin
1d0bce24c8d1af8d318a79320e4aa5c4fd56d2fb992c00f86a68a9856734dbbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0C 11028 bytes

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