Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e7f7dfd3d6088d…

MALICIOUS

PDF

83.2 KB Created: 2021-04-04 01:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e6094e3a38a42518b9c18cec9a22b79 SHA-1: 21f6d28af74afa7b165a5c93697212bc53118640 SHA-256: 71e7f7dfd3d6088df5019e9b030b393943938f2b320b18064881667da6de4005
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to download a Minecraft-related application. The ML classifier and ClamAV detection strongly indicate malicious intent, likely a phishing or trojan delivery mechanism. The embedded URL is the primary indicator of this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/123?utm_term=minecraft+pe+0.+14+0+apk
    • https://cdn-cms.f-static.net/uploads/4417308/normal_602398592c412.pdf
    • https://cdn-cms.f-static.net/uploads/4450147/normal_600d5b9e3dc88.pdf
    • https://cdn-cms.f-static.net/uploads/4416493/normal_5fd6639ba0aec.pdf
    • https://cdn-cms.f-static.net/uploads/4369933/normal_60170099a0487.pdf
    • https://cdn-cms.f-static.net/uploads/4425005/normal_605444d06de1b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://botawaxugeb.epizy.com/ziparafutelipakerasulona.pdf
    • https://uploads.strikinglycdn.com/files/253ee4c9-ba22-4fcc-a8ef-ebdd48f8ebec/fanorojebatubiwa.pdf
    • https://s3.amazonaws.com/jixerubowi/80981377996.pdf
    • https://36d3fe4d-ce77-4ecd-ae21-04b42370c250.filesusr.com/ugd/871c54_ad18456a34544282a04770f111669ba4.pdf?index=true
    • https://s3.amazonaws.com/lazesej/kobojazo.pdf
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_44beb21e7e804d38839fa5f608462e6e.pdf?index=true
    • http://forarevepezifu.epizy.com/75841906374.pdf
    • http://bikumekomem.epizy.com/bacteriological_analytical_manual.pdf
    • https://d8ec88ce-93b1-4b83-b294-7016fd5b5063.filesusr.com/ugd/366252_d2c50c1154a24e098b2c3af0f013913a.pdf?index=true
    • https://s3.amazonaws.com/nunakixuma/a_color_of_his_own_science_activities.pdf
    • https://s3.amazonaws.com/lunojol/vujesuten.pdf
    • https://2aa89031-56ac-4de1-b828-aabe99840ec8.filesusr.com/ugd/cf14a4_67c389825ca64012b0f82b73704364d7.pdf?index=true
    • https://s3.amazonaws.com/papuja/23398090412.pdf
    • https://s3.amazonaws.com/rodiligarexo/gavekedozuvu.pdf
    • https://uploads.strikinglycdn.com/files/aaf4d25c-c979-4aef-b57f-d355092433f7/essentialism_greg_mckeown_summary.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb70.bin
f59571a61aa077f04996a50ee68d48c3125b4dedfc713464bc85152c3e16f181		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB70 4860 bytes
font_01_sfnt_off00010c07.bin
ec0b39c70cce6f5efaa885f9f9e5be40a03d67f169ca5e6d199a89646aea3f39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C07 11032 bytes
font_02_sfnt_off00013170.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13170 4324 bytes

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