Malicious PDF — malware analysis report

Static analysis result for SHA-256 d497067023325737…

MALICIOUS

PDF

112.2 KB Created: 2021-03-22 14:08:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 2a9610658e19f1151fcdadb977af1b9b SHA-1: d8c9604e41d1605a326961ea4b9bf0f36c4732eb SHA-256: d497067023325737dff59d18d18703ef0789ba2bf5b52134aa53f176cf66d89c
136 Risk Score

Malware Insights

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

The PDF contains embedded URLs and heuristic firings indicating malicious intent, specifically related to phishing and potentially downloading further payloads. The ML classifier and ClamAV detection strongly suggest maliciousness. The document body, though heavily obfuscated, appears to be a lure related to a school schedule, which is a common tactic for spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://fokemale.ru/wix?keyword=west+hills+high+school+freshman+football+schedule PDF link annotation
    • http://tameeniraq.com/how_to_hard_reset_android_phone_using_cmddv0b0.pdfIn PDF document text
    • http://guzuguse.22web.org/how_to_create_a_wordpress_website_with_godaddy_domain.pdfIn macro / runtime command snippet
    • http://dragonflysagewellness.com/49089359358tzchd.pdfIn PDF document text
    • http://zumbayuliya.online/91601767168kudfd.pdfIn PDF document text
    • http://strapslap.online/99299840647dbacn.pdfIn PDF document text
    • http://wavokumad.iblogger.org/91760321686.pdfIn PDF document text
    • http://mybestchan.online/50820341476if6pn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/final_fantasy_free_enterprise_guide.pdfIn PDF document text
    • https://f770b3d7-c897-40e0-9323-5ad0abd91552.filesusr.com/ugd/1fa6dd_87c36809d51343dd887e6a482e428946.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kubafezin/jaligumogutolarotilafoxa.pdfIn PDF document text
    • http://zowedejiwut.epizy.com/zmodo_pivot_quick_start_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/lmwh_monitoring_guidelines.pdfIn PDF document text
    • http://nokezipaxizowox.epizy.com/26181525115.pdfIn PDF document text
    • http://mobotifiriw.epizy.com/boy_scout_handbook_requirements.pdfIn PDF document text
    • http://nobegizoginipe.epizy.com/xekivosopigijatozunewa.pdfIn PDF document text
    • http://xaxotatizomeno.rf.gd/attarintiki_daredi_movie_tamilrockers_400mb.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/dofovoxugetixa.pdfIn PDF document text
    • https://3b0fe5ff-7f86-489c-8138-fc984e51136c.filesusr.com/ugd/bfd78a_dfbc671bafcf4bb692c310689633ad39.pdf?index=trueIn PDF document text
    • https://c8a164a7-2549-4056-b209-d27d417f800b.filesusr.com/ugd/136d3d_89bba7f39fbb4ccd8efefc34ca57e6ea.pdf?index=trueIn PDF document text
    • http://bopunuzas.rf.gd/manual_de_organizacin_y_funciones_de_una_empresa_constructora.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
    • https://s3.amazonaws.com/wusigipufuvowix/final_In macro / runtime command snippet
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000175eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x175EB 5588 bytes
SHA-256: 55f3625850ff961517d79fed5bece16099bd240c8da747b7c9908d9015779836
font_01_sfnt_off000188d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188D3 12612 bytes
SHA-256: 4d47e6163378e8a42bca1b4445e3aaefddf7aad7abf5204361bb1ffa11cb54ad

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