Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d951fa3f065d2a…

MALICIOUS

PDF

86.4 KB Created: 2021-03-16 15:12:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c9479f9c94dca24ba7b0e91a11b1853e SHA-1: da9a98c7d54de61663fca323d12db2ae97894fbe SHA-256: d1d951fa3f065d2a0db1a9f342e5cc1138029036ba718984eb2e7619be43cfd0
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1553.005 Antivirus Software Disabled

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link to a suspicious URL that appears to be a download crack for 'Rise of Nations Extended Edition'. Additionally, the document contains an instruction to disable security software, which is a high-risk indicator for malicious documents. The combination of these factors strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=rise+of+nations+extended+edition+download+crack PDF link annotation
    • http://misitaka.iblogger.org/action_movie_fx_apk_free.pdfIn PDF document text
    • http://zagiropi.22web.org/forestry_bees_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480590/normal_603277ad6fead.pdfIn PDF document text
    • https://sutuvawubu.weebly.com/uploads/1/3/6/0/136055635/1856545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_602c570c25f33.pdfIn PDF document text
    • https://xafokevixutevib.weebly.com/uploads/1/3/2/6/132681308/logeribej.pdfIn PDF document text
    • http://lorewipa.scienceontheweb.net/cva_wolf_209_magnum_break_action_.50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413973/normal_604e3e1648c3f.pdfIn PDF document text
    • https://limikasideg.weebly.com/uploads/1/3/4/4/134446439/lixatigapeziruxutafo.pdfIn PDF document text
    • http://kajipim.mypressonline.com/how_much_is_reduced_fare_for_seniors.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422894/normal_5fe7aeed954d1.pdfIn PDF document text
    • http://zefupubodagome.22web.org/24744867451.pdfIn PDF document text
    • http://nafarami.medianewsonline.com/what_are_the_14_principles.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_603a6d36adb27.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5d3a357a-25b2-4459-9cd8-210b235f7b36.filesusr.com/ugd/45e30f_a1d1dc3710d6490690811179db3ad7ae.pdf?index=trueIn PDF document text
    • http://butaxogusevi.epizy.com/yahoo_fantasy_football_cheat_sheet_auction.pdfIn PDF document text
    • http://xatowumo.epizy.com/canales_ionicos_de_sodio.pdfIn PDF document text
    • http://lewomunenuvi.myartsonline.com/language_learning_disabilities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd6b3265-4612-4d8f-8bac-aa0ad125faa0/what_is_religious_socialization.pdfIn PDF document text
    • https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_09b22f5b0ae041ab983067fddbe4a05d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c9ef5ff-fb61-4e24-8d0f-045fd3863bd9/fallout_4_new_vegas.pdfIn PDF document text
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_b8ec04abcf724f2cad5a798dcf7af210.pdf?index=trueIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001301c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1301C 17492 bytes
SHA-256: 4f8a61a6d276b8a1ec671ff2908f7e9166af559548b04afcce5b75560c77250f
font_00_sfnt_off0000f738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF738 5248 bytes
SHA-256: 33ce959fd22741a84c7c823c7c5db441817e1a3335c3a40cd2ad14e5060a443f
font_01_sfnt_off0001093c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093C 11320 bytes
SHA-256: 3320f6c9576cb159799f8973884ba4608ff8ea01f073d378f74e606a86d176c7

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