Malicious PDF — malware analysis report

Static analysis result for SHA-256 d584e68b30520d74…

MALICIOUS

PDF

74.7 KB Created: 2021-05-08 06:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 333c28c5c6df7bd5c54891a3f3ee90b1 SHA-1: 25d0aa5eccca2b2e92184dcd0dc10fdbf64be0fc SHA-256: d584e68b30520d74ee42ce148cd3a0109c02a86ad090349295ddbe91b045fb92
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were extracted, the presence of an external URI suggests the document's purpose is to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gimoguvi.ru/strik?utm_term=how+to+clean+stairs+with+rug+doctor+pro+carpet PDF link annotation
    • http://zifufarox.getenjoyment.net/dekotulutosazibuzog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454172/normal_6058be0c15db6.pdfIn PDF document text
    • http://tibudirowe.mygamesonline.org/kiwar.pdfIn PDF document text
    • http://gilutij.iblogger.org/mimadivatax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403263/normal_5fed6ade19253.pdfIn PDF document text
    • http://basidugom.mygamesonline.org/jimasizolitokekununif.pdfIn PDF document text
    • http://vuzuwul.getenjoyment.net/48726524825.pdfIn PDF document text
    • http://zinuginevero.22web.org/53235811218.pdfIn PDF document text
    • http://vosojivaru.mypressonline.com/genetics_powerpoint.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nebojemesiwi.atwebpages.com/fuzozajegiga.pdfIn PDF document text
    • http://rewigikokisiw.epizy.com/aruba_2530_manual.pdfIn PDF document text
    • http://vameberimonon.onlinewebshop.net/ganoderma_lucidum_benefits.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/69323833200.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/applicant_guide_oriel.pdfIn PDF document text
    • http://pexirud.onlinewebshop.net/spalding_50_inch_polycarbonate_portable_basketball_hoop_system_assembly_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/29326344940.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/84382174198.pdfIn PDF document text
    • http://nujebij.onlinewebshop.net/xadelewudaburasiba.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F9 5388 bytes
SHA-256: 39cad1f7af5905dffb1e9b806e6be2d3a7c085c0ba2da48eb7f009363e0e410a
font_01_sfnt_off0000f757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF757 11264 bytes
SHA-256: c6ca2fecdefd6161df87cd6bd4a8eccdb9bde1077ac27620c8d24f28e443d79a

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